ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

The version of AOS installed on the remote host is prior to 5.17.1.3. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.17.1.3 advisory.

  - An issue was discovered in the Linux kernel before 4.14.11. A double free may be caused by the function     allocate_trace_buffer in the file kernel/trace/trace.c. (CVE-2017-18595)

  - In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in     kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-     buffer). (CVE-2019-19768)

  - A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7.
    This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into     the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO     restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate     that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer     dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network     user to crash the system kernel, resulting in a denial of service. (CVE-2020-10711)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated     synchronization via a server mode packet with a spoofed source IP address, because transmissions are     rescheduled even when a packet lacks a valid origin timestamp. (CVE-2020-11868)

  - An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-     daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local     attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use     this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus     clients. (CVE-2020-12049)

  - The VFIO PCI driver in the Linux kernel through 5.6.13 mishandles attempts to access disabled memory     space. (CVE-2020-12888)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can     query time from the victim's ntpd instance. (CVE-2020-13817)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Libraries). Supported     versions that are affected are Java SE: 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251. Difficult to     exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to     compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized     update, insert or delete access to some of Java SE, Java SE Embedded accessible data as well as     unauthorized read access to a subset of Java SE, Java SE Embedded accessible data. Note: Applies to client     and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start     applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the     specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as     through a web service. (CVE-2020-14556)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: JSSE). Supported     versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251.
    Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to     compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized     read access to a subset of Java SE, Java SE Embedded accessible data. Note: Applies to client and server     deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and     sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component     without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web     service. (CVE-2020-14577)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Libraries). Supported     versions that are affected are Java SE: 7u261 and 8u251; Java SE Embedded: 8u251. Difficult to exploit     vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise     Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to     cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded. Note: Applies to client and     server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start     applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the     specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as     through a web service. (CVE-2020-14578, CVE-2020-14579)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Libraries). Supported     versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251.
    Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple     protocols to compromise Java SE, Java SE Embedded. Successful attacks require human interaction from a     person other than the attacker and while the vulnerability is in Java SE, Java SE Embedded, attacks may     significantly impact additional products. Successful attacks of this vulnerability can result in takeover     of Java SE, Java SE Embedded. Note: This vulnerability applies to Java deployments, typically in clients     running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code     (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability     does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code     installed by an administrator). (CVE-2020-14583)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: 2D). Supported     versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251. Easily     exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to     compromise Java SE, Java SE Embedded. Successful attacks require human interaction from a person other     than the attacker and while the vulnerability is in Java SE, Java SE Embedded, attacks may significantly     impact additional products. Successful attacks of this vulnerability can result in unauthorized creation,     deletion or modification access to critical data or all Java SE, Java SE Embedded accessible data. Note:
    This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start     applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the     internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java     deployments, typically in servers, that load and run only trusted code (e.g., code installed by an     administrator). (CVE-2020-14593)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: JAXP). Supported     versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251. Easily     exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to     compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized     update, insert or delete access to some of Java SE, Java SE Embedded accessible data. Note: This     vulnerability can only be exploited by supplying data to APIs in the specified Component without using     Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service.
    (CVE-2020-14621)

  - When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to     9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one     request to another meaning user A and user B could both see the results of user A's request.
    (CVE-2021-25122)

  - The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to     9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be     used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published     prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to     this issue. (CVE-2021-25329)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AOS installed on the remote host is prior to 5.17.1.5. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.17.1.5 advisory.

  - An issue was discovered in the Linux kernel before 4.14.11. A double free may be caused by the function     allocate_trace_buffer in the file kernel/trace/trace.c. (CVE-2017-18595)

  - In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in     kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-     buffer). (CVE-2019-19768)

  - A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7.
    This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into     the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO     restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate     that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer     dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network     user to crash the system kernel, resulting in a denial of service. (CVE-2020-10711)

  - An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-     daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local     attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use     this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus     clients. (CVE-2020-12049)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Libraries). Supported     versions that are affected are Java SE: 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251. Difficult to     exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to     compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized     update, insert or delete access to some of Java SE, Java SE Embedded accessible data as well as     unauthorized read access to a subset of Java SE, Java SE Embedded accessible data. Note: Applies to client     and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start     applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the     specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as     through a web service. (CVE-2020-14556)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: JSSE). Supported     versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251.
    Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to     compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized     read access to a subset of Java SE, Java SE Embedded accessible data. Note: Applies to client and server     deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and     sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component     without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web     service. (CVE-2020-14577)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Libraries). Supported     versions that are affected are Java SE: 7u261 and 8u251; Java SE Embedded: 8u251. Difficult to exploit     vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise     Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to     cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded. Note: Applies to client and     server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start     applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the     specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as     through a web service. (CVE-2020-14578, CVE-2020-14579)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Libraries). Supported     versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251.
    Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple     protocols to compromise Java SE, Java SE Embedded. Successful attacks require human interaction from a     person other than the attacker and while the vulnerability is in Java SE, Java SE Embedded, attacks may     significantly impact additional products. Successful attacks of this vulnerability can result in takeover     of Java SE, Java SE Embedded. Note: This vulnerability applies to Java deployments, typically in clients     running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code     (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability     does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code     installed by an administrator). (CVE-2020-14583)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: 2D). Supported     versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251. Easily     exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to     compromise Java SE, Java SE Embedded. Successful attacks require human interaction from a person other     than the attacker and while the vulnerability is in Java SE, Java SE Embedded, attacks may significantly     impact additional products. Successful attacks of this vulnerability can result in unauthorized creation,     deletion or modification access to critical data or all Java SE, Java SE Embedded accessible data. Note:
    This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start     applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the     internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java     deployments, typically in servers, that load and run only trusted code (e.g., code installed by an     administrator). (CVE-2020-14593)

  - Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: JAXP). Supported     versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251. Easily     exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to     compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized     update, insert or delete access to some of Java SE, Java SE Embedded accessible data. Note: This     vulnerability can only be exploited by supplying data to APIs in the specified Component without using     Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service.
    (CVE-2020-14621)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated     synchronization via a server mode packet with a spoofed source IP address, because transmissions are     rescheduled even when a packet lacks a valid origin timestamp. (CVE-2020-11868)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can     query time from the victim's ntpd instance. (CVE-2020-13817)

  - The VFIO PCI driver in the Linux kernel through 5.6.13 mishandles attempts to access disabled memory     space. (CVE-2020-12888)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has ntp packages installed that are affected by a vulnerability:

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can     query time from the victim's ntpd instance. (CVE-2020-13817)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the ntp packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows an off-path attacker to block unauthenticated     synchronization via a server mode packet with a spoofed     source IP address, because transmissions are     rescheduled even when a packet lacks a valid origin     timestamp.(CVE-2020-11868)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting     transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time     sources. There must be an off-path attacker who can     query time from the victim's ntpd     instance.(CVE-2020-13817)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2020:14415-1 advisory.

  - ntpd in ntp 4.2.8p10, 4.2.8p11, 4.2.8p12 and 4.2.8p13 allow remote attackers to prevent a broadcast client     from synchronizing its clock with a broadcast NTP server via soofed mode 3 and mode 5 packets. The     attacker must either be a part of the same broadcast network or control a slave in that broadcast network     that can capture certain required packets on the attacker's behalf and send them to the attacker.
    (CVE-2018-8956)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated     synchronization via a server mode packet with a spoofed source IP address, because transmissions are     rescheduled even when a packet lacks a valid origin timestamp. (CVE-2020-11868)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can     query time from the victim's ntpd instance. (CVE-2020-13817)

  - ntpd in ntp 4.2.8 before 4.2.8p15 and 4.3.x before 4.3.101 allows remote attackers to cause a denial of     service (memory consumption) by sending packets, because memory is not freed in situations where a CMAC     key is used and associated with a CMAC algorithm in the ntp.keys file. (CVE-2020-15025)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the ntp package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting     transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time     sources. There must be an off-path attacker who can     query time from the victim's ntpd     instance.(CVE-2020-13817)

  - ntpd in ntp 4.2.8 before 4.2.8p15 and 4.3.x before     4.3.101 allows remote attackers to cause a denial of     service (memory consumption) by sending packets,     because memory is not freed in situations where a CMAC     key is used and associated with a CMAC algorithm in the     ntp.keys file.(CVE-2020-15025)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The ntpd in the network time protocol (NTP) before 4.2.8p14, and in 4.3.x before 4.3.100, allows remote attackers to cause a denial-of-service (DoS), either daemon exit or system time change, by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance.(CVE-2020-13817)

Impact

An attacker who can send a large number of packets with the spoofed IPv4 address of the upstream server can use this flaw to modify the victim's clock by a limited amount or cause ntpd to exit.

BIG-IP

Your BIG-IP system is affected only when you configure it as an NTP server, and sources for the BIG-IP system's time are unreliable, unauthenticated, upstream NTP servers.

BIG-IQ

The BIG-IQ system is not directly affected by this vulnerability, but it inherits the vulnerability from the BIG-IP system.

According to the version of the ntp packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting     transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time     sources. There must be an off-path attacker who can     query time from the victim's ntpd     instance.(CVE-2020-13817)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ntp packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Buffer overflow in the decodearr function in ntpq in     ntp 4.2.8p6 through 4.2.8p10 allows remote attackers to     execute arbitrary code by leveraging an ntpq query and     sending a response with a crafted array.(CVE-2018-7183)

  - ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets     before updating the 'received' timestamp, which allows     remote attackers to cause a denial of service     (disruption) by sending a packet with a zero-origin     timestamp causing the association to reset and setting     the contents of the packet as the most recent     timestamp. This issue is a result of an incomplete fix     for CVE-2015-7704.(CVE-2018-7184)

  - The broadcast mode replay prevention functionality in     ntpd in NTP before 4.2.8p9 allows remote attackers to     cause a denial of service (reject broadcast mode     packets) via a crafted broadcast mode     packet.(CVE-2016-7427)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting     transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time     sources. There must be an off-path attacker who can     query time from the victim's ntpd     instance.(CVE-2020-13817)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ntp packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the Network Time Protocol (NTP),     where a security issue exists that allows an off-path     attacker to prevent the Network Time Protocol daemon     (ntpd) from synchronizing with NTP servers not using     authentication. A server mode packet with a spoofed     source address sent to the client ntpd causes the next     transmission to be rescheduled, even if the packet does     not have a valid origin timestamp. If the packet is     sent to the client frequently enough, it stops polling     the server and is unable to synchronize with     it.(CVE-2020-11868)

  - A high-performance ntpd instance that gets its time     from unauthenticated IPv4 time sources may be     vulnerable to an off-path attacker who can query time     from the victim's ntpd instance. An attacker who can     send a large number of packets with the spoofed IPv4     address of the upstream server can use this flaw to     modify the victim's clock by a limited amount or cause     ntpd to exit.(CVE-2020-13817)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the version of the ntp packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting     transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time     sources. There must be an off-path attacker who can     query time from the victim's ntpd     instance.(CVE-2020-13817)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ntp packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting     transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time     sources. There must be an off-path attacker who can     query time from the victim's ntpd     instance.(CVE-2020-13817)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows an off-path attacker to block unauthenticated     synchronization via a server mode packet with a spoofed     source IP address, because transmissions are     rescheduled even when a packet lacks a valid origin     timestamp.(CVE-2020-11868)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ntp packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows an off-path attacker to block unauthenticated     synchronization via a server mode packet with a spoofed     source IP address, because transmissions are     rescheduled even when a packet lacks a valid origin     timestamp.(CVE-2020-11868)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100     allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting     transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time     sources. There must be an off-path attacker who can     query time from the victim's ntpd     instance.(CVE-2020-13817)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-202007-12 (NTP: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in NTP. Please review the       CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

This update for ntp fixes the following issues :

ntp was updated to 4.2.8p15

  - CVE-2020-11868: Fixed an issue which a server mode     packet with spoofed source address frequently send to     the client ntpd could have caused denial of service     (bsc#1169740).

  - CVE-2018-8956: Fixed an issue which could have allowed     remote attackers to prevent a broadcast client from     synchronizing its clock with a broadcast NTP server via     spoofed mode 3 and mode 5 packets (bsc#1171355).

  - CVE-2020-13817: Fixed an issue which an off-path     attacker with the ability to query time from victim's     ntpd instance could have modified the victim's clock by     a limited amount (bsc#1172651).

  - CVE-2020-15025: Fixed an issue which remote attacker     could have caused denial of service by consuming the     memory when a CMAC key was used andassociated with a     CMAC algorithm in the ntp.keys (bsc#1173334).

  - Removed an OpenSSL version warning (bsc#992038 and     bsc#1125401).

This update was imported from the SUSE:SLE-15:Update update project.

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets.
The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance. (CVE-2020-13817)

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp. (CVE-2020-11868)

This update for ntp fixes the following issues :

ntp was updated to 4.2.8p15

CVE-2020-11868: Fixed an issue which a server mode packet with spoofed source address frequently send to the client ntpd could have caused denial of service (bsc#1169740).

CVE-2018-8956: Fixed an issue which could have allowed remote attackers to prevent a broadcast client from synchronizing its clock with a broadcast NTP server via spoofed mode 3 and mode 5 packets (bsc#1171355).

CVE-2020-13817: Fixed an issue which an off-path attacker with the ability to query time from victim's ntpd instance could have modified the victim's clock by a limited amount (bsc#1172651).

CVE-2020-15025: Fixed an issue which remote attacker could have caused denial of service by consuming the memory when a CMAC key was used andassociated with a CMAC algorithm in the ntp.keys (bsc#1173334).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2663 advisory.

    The Network Time Protocol (NTP) is used to synchronize a computer's time with another referenced time     source. These packages include the ntpd service which continuously adjusts system time and utilities used     to query and configure the ntpd service.

    Security Fix(es):

    * ntp: ntpd using highly predictable transmit timestamps could result in time change or DoS     (CVE-2020-13817)

    * ntp: DoS on client ntpd using server mode packet (CVE-2020-11868)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-2663 advisory.

    - don't update transmission time on invalid response (CVE-2020-11868)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Security Fix(es) :

  - ntp: ntpd using highly predictable transmit timestamps     could result in time change or DoS (CVE-2020-13817)

  - ntp: DoS on client ntpd using server mode packet     (CVE-2020-11868)

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2663 advisory.

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated     synchronization via a server mode packet with a spoofed source IP address, because transmissions are     rescheduled even when a packet lacks a valid origin timestamp. (CVE-2020-11868)

  - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service     (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The     victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can     query time from the victim's ntpd instance. (CVE-2020-13817)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
196527	RHEL 5 : ntp (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
196526	RHEL 6 : ntp (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
164604	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.17.1.3)	Nessus	Misc.	high
164596	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.15.3)	Nessus	Misc.	critical
164595	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.18)	Nessus	Misc.	critical
164579	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.17.1.5)	Nessus	Misc.	high
154477	NewStart CGSL CORE 5.05 / MAIN 5.05 : ntp Vulnerability (NS-SA-2021-0186)	Nessus	NewStart CGSL Local Security Checks	high
151379	EulerOS Virtualization 3.0.2.2 : ntp (EulerOS-SA-2021-2151)	Nessus	Huawei Local Security Checks	high
150680	SUSE SLES11 Security Update : ntp (SUSE-SU-2020:14415-1)	Nessus	SuSE Local Security Checks	high
147483	EulerOS Virtualization 2.9.1 : ntp (EulerOS-SA-2021-1616)	Nessus	Huawei Local Security Checks	high
145255	F5 Networks BIG-IP : NTP vulnerabilities (K55376430)	Nessus	F5 Networks Local Security Checks	high
142558	EulerOS Virtualization 3.0.6.6 : ntp (EulerOS-SA-2020-2461)	Nessus	Huawei Local Security Checks	high
142303	EulerOS 2.0 SP2 : ntp (EulerOS-SA-2020-2374)	Nessus	Huawei Local Security Checks	critical
140338	EulerOS Virtualization for ARM 64 3.0.2.0 : ntp (EulerOS-SA-2020-1968)	Nessus	Huawei Local Security Checks	high
140166	EulerOS 2.0 SP5 : ntp (EulerOS-SA-2020-1945)	Nessus	Huawei Local Security Checks	high
139996	EulerOS Virtualization for ARM 64 3.0.6.0 : ntp (EulerOS-SA-2020-1893)	Nessus	Huawei Local Security Checks	high
139147	EulerOS 2.0 SP8 : ntp (EulerOS-SA-2020-1817)	Nessus	Huawei Local Security Checks	high
138935	GLSA-202007-12 : NTP: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
138726	openSUSE Security Update : ntp (openSUSE-2020-934)	Nessus	SuSE Local Security Checks	high
138672	openSUSE Security Update : ntp (openSUSE-2020-1007)	Nessus	SuSE Local Security Checks	high
138621	Amazon Linux 2 : ntp (ALAS-2020-1455)	Nessus	Amazon Linux Local Security Checks	high
138311	SUSE SLES12 Security Update : ntp (SUSE-SU-2020:1805-1)	Nessus	SuSE Local Security Checks	high
137828	RHEL 7 : ntp (RHSA-2020:2663)	Nessus	Red Hat Local Security Checks	high
137819	Oracle Linux 7 : ntp (ELSA-2020-2663)	Nessus	Oracle Linux Local Security Checks	high
137773	Scientific Linux Security Update : ntp on SL7.x x86_64 (20200623)	Nessus	Scientific Linux Local Security Checks	high
137762	CentOS 7 : ntp (RHSA-2020:2663)	Nessus	CentOS Local Security Checks	high

Detections

Analytics

CVE-2020-13817

high

Tenable Plugins

critical

high

high

critical

critical

high

high

high

high

high

high

high

critical

high

high

high

high

high

high

high

high

high

high

high

high

high