A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.

An update of the libcap package has been released.

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

The remote CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the libcap-2.48-9.el9 build changelog.

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

  - A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an     integer overflow if the input string is close to 4GiB. (CVE-2023-2603)

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

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2023:4524 advisory.

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

  - A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an     integer overflow if the input string is close to 4GiB. (CVE-2023-2603)

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

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

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

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 libcap package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

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 version of AHV installed on the remote host is prior to 20220304.480. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-20230302.1011 advisory.

  - A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may     allow an authenticated client to cause a denial of service. (CVE-2023-1667)

  - A vulnerability was found in libssh, where the authentication check of the connecting client can be     bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen     if there is insufficient memory or the memory usage is limited. The problem is caused by the return value     `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call     `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the     cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
    (CVE-2023-2283)

  - The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path,     leading to remote code execution if an agent is forwarded to an attacker-controlled system. (Code in     /usr/lib is not necessarily safe for loading into ssh-agent.) NOTE: this issue exists because of an     incomplete fix for CVE-2016-10009. (CVE-2023-38408)

  - Every `named` instance configured to run as a recursive resolver maintains a cache database holding the     responses to the queries it has recently sent to authoritative servers. The size limit for that cache     database can be configured using the `max-cache-size` statement in the configuration file; it defaults to     90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the     configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets     from the cache, to keep memory use below the configured limit. It has been discovered that the     effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the     resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size`     limit to be significantly exceeded. This issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0     through 9.18.15, 9.19.0 through 9.19.13, 9.11.3-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.
    (CVE-2023-2828)

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

  - A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an     integer overflow if the input string is close to 4GiB. (CVE-2023-2603)

  - D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon. If a privileged user with     control over the dbus-daemon is using the org.freedesktop.DBus.Monitoring interface to monitor message bus     traffic, then an unprivileged user with the ability to connect to the same dbus-daemon can cause a dbus-     daemon crash under some circumstances via an unreplyable message. When done on the well-known system bus,     this is a denial-of-service vulnerability. The fixed versions are 1.12.28, 1.14.8, and 1.15.6.
    (CVE-2023-34969)

  - Buffer Overflow vulnerability found in SQLite3 v.3.27.1 and before allows a local attacker to cause a     denial of service via a crafted script. (CVE-2020-24736)

  - systemd before 247 does not adequately block local privilege escalation for some Sudo configurations,     e.g., plausible sudoers files in which the systemctl status command may be executed. Specifically,     systemd does not set LESSSECURE to 1, and thus other programs may be launched from the less program. This     presents a substantial security risk when running systemctl from Sudo, because less executes as root when     the terminal size is too small to show the complete systemctl output. (CVE-2023-26604)

  - Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through 4.4.11,     5.0 through 5.2.4, and 5.3 through 5.3.8; Client and Server and ConnectSecure 6.0 through 6.0.4; Server     for Linux on IBM System z 6.0.4; Server for IBM z/OS 5.5.1 and earlier, 6.0.0, and 6.0.1; and Client 4.0-J     through 4.3.3-J and 4.0-K through 4.3.10-K; and (2) OpenSSH 4.7p1 and possibly other versions, when using     a block cipher algorithm in Cipher Block Chaining (CBC) mode, makes it easier for remote attackers to     recover certain plaintext data from an arbitrary block of ciphertext in an SSH session via unknown     vectors. (CVE-2008-5161)

  - Requests is a HTTP library. Since Requests 2.3.0, Requests has been leaking Proxy-Authorization headers to     destination servers when redirected to an HTTPS endpoint. This is a product of how we use     `rebuild_proxies` to reattach the `Proxy-Authorization` header to requests. For HTTP connections sent     through the tunnel, the proxy will identify the header in the request itself and remove it prior to     forwarding to the destination server. However when sent over HTTPS, the `Proxy-Authorization` header must     be sent in the CONNECT request as the proxy has no visibility into the tunneled request. This results in     Requests forwarding proxy credentials to the destination server unintentionally, allowing a malicious     actor to potentially exfiltrate sensitive information. This issue has been patched in version 2.31.0.
    (CVE-2023-32681)

  - The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response     splitting. This is relevant to applications that use untrusted user input either to generate an HTTP     response or to create a CGI::Cookie object. (CVE-2021-33621)

  - A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to URI objects. The fixed versions are 0.12.1, 0.11.1, 0.10.2 and 0.10.0.1. (CVE-2023-28755)

  - A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to Time objects. The fixed versions are 0.1.1 and 0.2.2. (CVE-2023-28756)

  - A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and     the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048     bytes can potentially disclose stack contents through the function returned address data, and may cause a     crash. (CVE-2023-4527)

  - A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that     has been freed, resulting in an application crash. This issue is only exploitable when a NSS module     implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the
    _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the     call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and     AI_V4MAPPED as flags. (CVE-2023-4806)

  - A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been     freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is     called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.
    (CVE-2023-4813)

  - A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the     GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted     GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with     elevated privileges. (CVE-2023-4911)

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

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-5911638116 advisory.

    Backport fix for CVE-2023-2602 and CVE-2023-2603

Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-ad944c2d34 advisory.

    Backport fix for CVE-2023-2602 and CVE-2023-2603

Tenable has extracted the preceding description block directly from the Fedora 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7400 advisory.

    Libcap is a library for getting and setting POSIX.1e (formerly POSIX 6) draft 15 capabilities.

    Security Fix(es):

    * libcap: Integer Overflow in _libcap_strdup() (CVE-2023-2603)

    * libcap: Memory Leak on pthread_create() Error (CVE-2023-2602)

    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 version of AHV installed on the remote host is prior to 20220304.480. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-20230302.216 advisory.

  - A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may     allow an authenticated client to cause a denial of service. (CVE-2023-1667)

  - A vulnerability was found in libssh, where the authentication check of the connecting client can be     bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen     if there is insufficient memory or the memory usage is limited. The problem is caused by the return value     `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call     `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the     cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
    (CVE-2023-2283)

  - Requests is a HTTP library. Since Requests 2.3.0, Requests has been leaking Proxy-Authorization headers to     destination servers when redirected to an HTTPS endpoint. This is a product of how we use     `rebuild_proxies` to reattach the `Proxy-Authorization` header to requests. For HTTP connections sent     through the tunnel, the proxy will identify the header in the request itself and remove it prior to     forwarding to the destination server. However when sent over HTTPS, the `Proxy-Authorization` header must     be sent in the CONNECT request as the proxy has no visibility into the tunneled request. This results in     Requests forwarding proxy credentials to the destination server unintentionally, allowing a malicious     actor to potentially exfiltrate sensitive information. This issue has been patched in version 2.31.0.
    (CVE-2023-32681)

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

  - A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an     integer overflow if the input string is close to 4GiB. (CVE-2023-2603)

  - D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon. If a privileged user with     control over the dbus-daemon is using the org.freedesktop.DBus.Monitoring interface to monitor message bus     traffic, then an unprivileged user with the ability to connect to the same dbus-daemon can cause a dbus-     daemon crash under some circumstances via an unreplyable message. When done on the well-known system bus,     this is a denial-of-service vulnerability. The fixed versions are 1.12.28, 1.14.8, and 1.15.6.
    (CVE-2023-34969)

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

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:5071 advisory.

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

  - A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an     integer overflow if the input string is close to 4GiB. (CVE-2023-2603)

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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-5071 advisory.

    - Fix integer overflow in _libcap_strdup() (CVE-2023-2603)       Resolves: rhbz#2210638

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.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:5071 advisory.

    Libcap is a library for getting and setting POSIX.1e (formerly POSIX 6) draft 15 capabilities.

    Security Fix(es):

    * libcap: Integer Overflow in _libcap_strdup() (CVE-2023-2603)

    * libcap: Memory Leak on pthread_create() Error (CVE-2023-2602)

    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 Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2023:4524 advisory.

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

  - A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an     integer overflow if the input string is close to 4GiB. (CVE-2023-2603)

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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-4524 advisory.

    - Fix integer overflow in _libcap_strdup() (CVE-2023-2603)       Resolves: rhbz#2210637

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.

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:4524 advisory.

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

  - A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an     integer overflow if the input string is close to 4GiB. (CVE-2023-2603)

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4524 advisory.

    Libcap is a library for getting and setting POSIX.1e (formerly POSIX 6) draft 15 capabilities.

    Security Fix(es):

    * libcap: Integer Overflow in _libcap_strdup() (CVE-2023-2603)

    * libcap: Memory Leak on pthread_create() Error (CVE-2023-2602)

    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 version of libcap installed on the remote host is prior to 2.54-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2136 advisory.

    libcap is vulnerable to a denial of service caused by the error handling in wrap_pthread_create()     function, which will cause memory to be leaked in the case of an error. (CVE-2023-2602)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:2765-1 advisory.

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

  - A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an     integer overflow if the input string is close to 4GiB. (CVE-2023-2603)

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 libcap installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-2602 advisory.

  - A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious     actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
    (CVE-2023-2602)

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

The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6166-1 advisory.

    David Gstir discovered that libcap2 incorrectly handled certain return codes. An attacker could possibly     use this issue to cause libcap2 to consume memory, leading to a denial of service. (CVE-2023-2602)

    Richard Weinberger discovered that libcap2 incorrectly handled certain long input strings. An attacker     could use this issue to cause libcap2 to crash, resulting in a denial of service, or possibly execute     arbitrary code. (CVE-2023-2603)

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

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2023-195 advisory.

    libcap is vulnerable to a denial of service caused by the error handling in wrap_pthread_create()     function, which will cause memory to be leaked in the case of an error. (CVE-2023-2602)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

ID	Name	Product	Family	Severity
206823	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-20230302.100173)	Nessus	Misc.	critical
204574	Photon OS 5.0: Libcap PHSA-2023-5.0-0020	Nessus	PhotonOS Local Security Checks	high
203287	Photon OS 4.0: Libcap PHSA-2023-4.0-0400	Nessus	PhotonOS Local Security Checks	high
196067	RHEL 7 : libcap (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
196009	RHEL 6 : libcap (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
191222	CentOS 9 : libcap-2.48-9.el9	Nessus	CentOS Local Security Checks	high
190167	CentOS 8 : libcap (CESA-2023:4524)	Nessus	CentOS Local Security Checks	high
188681	EulerOS 2.0 SP11 : libcap (EulerOS-SA-2023-2690)	Nessus	Huawei Local Security Checks	low
188399	EulerOS 2.0 SP11 : libcap (EulerOS-SA-2023-2648)	Nessus	Huawei Local Security Checks	low
188231	EulerOS Virtualization 2.11.0 : libcap (EulerOS-SA-2023-2756)	Nessus	Huawei Local Security Checks	low
188230	EulerOS Virtualization 2.11.1 : libcap (EulerOS-SA-2023-2725)	Nessus	Huawei Local Security Checks	low
187269	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-20230302.1011)	Nessus	Misc.	critical
186452	Fedora 38 : libcap (2023-5911638116)	Nessus	Fedora Local Security Checks	critical
186384	Fedora 39 : libcap (2023-ad944c2d34)	Nessus	Fedora Local Security Checks	critical
186072	RHEL 8 : libcap (RHSA-2023:7400)	Nessus	Red Hat Local Security Checks	critical
181785	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-20230302.216)	Nessus	Misc.	high
181429	AlmaLinux 9 : libcap (ALSA-2023:5071)	Nessus	Alma Linux Local Security Checks	high
181332	Oracle Linux 9 : libcap (ELSA-2023-5071)	Nessus	Oracle Linux Local Security Checks	critical
181285	RHEL 9 : libcap (RHSA-2023:5071)	Nessus	Red Hat Local Security Checks	critical
180154	Rocky Linux 8 : libcap (RLSA-2023:4524)	Nessus	Rocky Linux Local Security Checks	high
179839	Oracle Linux 8 : libcap (ELSA-2023-4524)	Nessus	Oracle Linux Local Security Checks	critical
179620	AlmaLinux 8 : libcap (ALSA-2023:4524)	Nessus	Alma Linux Local Security Checks	high
179458	RHEL 8 : libcap (RHSA-2023:4524)	Nessus	Red Hat Local Security Checks	critical
178492	Amazon Linux 2 : libcap (ALAS-2023-2136)	Nessus	Amazon Linux Local Security Checks	low
177919	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : libcap (SUSE-SU-2023:2765-1)	Nessus	SuSE Local Security Checks	high
177817	CBL Mariner 2.0 Security Update: libcap (CVE-2023-2602)	Nessus	MarinerOS Local Security Checks	low
177325	Ubuntu 20.04 LTS / 22.04 LTS / 23.04 : libcap2 vulnerabilities (USN-6166-1)	Nessus	Ubuntu Local Security Checks	critical
176911	Amazon Linux 2023 : libcap, libcap-devel, libcap-static (ALAS2023-2023-195)	Nessus	Amazon Linux Local Security Checks	low

Detections

Analytics

CVE-2023-2602

low

Tenable Plugins

critical

high

high

high

high

high

high

low

low

low

low

critical

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critical

critical

high

high

critical

critical

high

critical

high

critical

low

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critical

low