A flaw was found in Samba, all versions starting samba 4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2, in the way it handles a user password change or a new password for a samba user. The Samba Active Directory Domain Controller can be configured to use a custom script to check for password complexity. This configuration can fail to verify password complexity when non-ASCII characters are used in the password, which could lead to weak passwords being set for samba users, making it vulnerable to dictionary attacks.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3563 advisory.

  - A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to     retrieve the plaintext password sent over the wire even if Kerberos authentication was required.
    (CVE-2016-2124)

  - A flaw was found in the samba client, all samba versions before samba 4.11.2, 4.10.10 and 4.9.15, where a     malicious server can supply a pathname to the client with separators. This could allow the client to     access files and folders outside of the SMB network pathnames. An attacker could use this vulnerability to     create files outside of the current working directory using the privileges of the client user.
    (CVE-2019-10218)

  - A flaw was found in Samba, all versions starting samba 4.5.0 before samba 4.9.15, samba 4.10.10, samba     4.11.2, in the way it handles a user password change or a new password for a samba user. The Samba Active     Directory Domain Controller can be configured to use a custom script to check for password complexity.
    This configuration can fail to verify password complexity when non-ASCII characters are used in the     password, which could lead to weak passwords being set for samba users, making it vulnerable to dictionary     attacks. (CVE-2019-14833)

  - A flaw was found in samba 4.0.0 before samba 4.9.15 and samba 4.10.x before 4.10.10. An attacker can crash     AD DC LDAP server via dirsync resulting in denial of service. Privilege escalation is not possible with     this issue. (CVE-2019-14847)

  - There is an issue in all samba 4.11.x versions before 4.11.5, all samba 4.10.x versions before 4.10.12 and     all samba 4.9.x versions before 4.9.18, where the removal of the right to create or modify a subtree would     not automatically be taken away on all domain controllers. (CVE-2019-14902)

  - All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where     if it is set with log level = 3 (or above) then the string obtained from the client, after a failed     character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange.
    In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to     terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a     crash there is harmless). (CVE-2019-14907)

  - There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions     before 4.10.12 and all samba 4.11.x versions before 4.11.5, essentially due to a call to realloc() while     other local variables still point at the original buffer. (CVE-2019-19344)

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

Several vulnerabilities were discovered in Samba, SMB/CIFS file, print, and login server for Unix

CVE-2019-10218

A flaw was found in the samba client, where a malicious server can supply a pathname to the client with separators. This could allow the client to access files and folders outside of the SMB network pathnames. An attacker could use this vulnerability to create files outside of the current working directory using the privileges of the client user.

CVE-2019-14833

A flaw was found in Samba, in the way it handles a user password change or a new password for a samba user. The Samba Active Directory Domain Controller can be configured to use a custom script to check for password complexity. This configuration can fail to verify password complexity when non-ASCII characters are used in the password, which could lead to weak passwords being set for samba users, making it vulnerable to dictionary attacks.

CVE-2019-14847

A flaw was found in samba where an attacker can crash AD DC LDAP server via dirsync resulting in denial of service. Privilege escalation is not possible with this issue.

CVE-2019-14861

Samba have an issue, where the (poorly named) dnsserver RPC pipe provides administrative facilities to modify DNS records and zones.
Samba, when acting as an AD DC, stores DNS records in LDAP. In AD, the default permissions on the DNS partition allow creation of new records by authenticated users. This is used for example to allow machines to self-register in DNS. If a DNS record was created that case-insensitively matched the name of the zone, the ldb_qsort() and dns_name_compare() routines could be confused into reading memory prior to the list of DNS entries when responding to DnssrvEnumRecords() or DnssrvEnumRecords2() and so following invalid memory as a pointer.

CVE-2019-14870

Samba have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.

CVE-2019-14902

There is an issue in samba, where the removal of the right to create or modify a subtree would not automatically be taken away on all domain controllers.

CVE-2019-14907

samba have an issue where if it is set with 'log level = 3' (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange. In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless).

CVE-2021-20254

A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.

For Debian 9 stretch, these problems have been fixed in version 2:4.5.16+dfsg-1+deb9u4.

We recommend that you upgrade your samba packages.

For the detailed security status of samba please refer to its security tracker page at: https://security-tracker.debian.org/tracker/samba

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA 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 samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in Samba, all versions starting samba     4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2,     in the way it handles a user password change or a new     password for a samba user. The Samba Active Directory     Domain Controller can be configured to use a custom     script to check for password complexity. This     configuration can fail to verify password complexity     when non-ASCII characters are used in the password,     which could lead to weak passwords being set for samba     users, making it vulnerable to dictionary     attacks.(CVE-2019-14833)

  - A flaw was found in samba 4.0.0 before samba 4.9.15 and     samba 4.10.x before 4.10.10. An attacker can crash AD     DC LDAP server via dirsync resulting in denial of     service. Privilege escalation is not possible with this     issue.(CVE-2019-14847)

  - A use-after-free flaw was found in all samba LDAP     server versions before 4.10.17, before 4.11.11, before     4.12.4 used in a AC DC configuration. A Samba LDAP user     could use this flaw to crash samba.(CVE-2020-10760)

  - Heimdal before 7.4 allows remote attackers to     impersonate services with Orpheus' Lyre attacks because     it obtains service-principal names in a way that     violates the Kerberos 5 protocol specification. In
    _krb5_extract_ticket() the KDC-REP service name must be     obtained from the encrypted version stored in     'enc_part' instead of the unencrypted version stored in     'ticket'. Use of the unencrypted version provides an     opportunity for successful server impersonation and     other attacks. NOTE: this CVE is only for Heimdal and     other products that embed Heimdal code it does not     apply to other instances in which this part of the     Kerberos 5 protocol specification is     violated.(CVE-2017-11103)

  - A flaw was found in samba's DNS server. An     authenticated user could use this flaw to the RPC     server to crash. This RPC server, which also serves     protocols other than dnsserver, will be restarted after     a short delay, but it is easy for an authenticated non     administrative attacker to crash it again as soon as it     returns. The Samba DNS server itself will continue to     operate, but many RPC services will     not.(CVE-2020-14383)

  - A flaw was found in the way samba handled file and     directory permissions. An authenticated user could use     this flaw to gain access to certain file and directory     information which otherwise would be unavailable to the     attacker.(CVE-2020-14318)

  - A null pointer dereference flaw was found in samba's     Winbind service in versions before 4.11.15, before     4.12.9 and before 4.13.1. A local user could use this     flaw to crash the winbind service causing denial of     service.(CVE-2020-14323)

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 samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Heimdal before 7.4 allows remote attackers to     impersonate services with Orpheus' Lyre attacks because     it obtains service-principal names in a way that     violates the Kerberos 5 protocol specification. In
    _krb5_extract_ticket() the KDC-REP service name must be     obtained from the encrypted version stored in     'enc_part' instead of the unencrypted version stored in     'ticket'. Use of the unencrypted version provides an     opportunity for successful server impersonation and     other attacks. NOTE: this CVE is only for Heimdal and     other products that embed Heimdal code it does not     apply to other instances in which this part of the     Kerberos 5 protocol specification is     violated.(CVE-2017-11103)

  - A use-after-free flaw was found in all samba LDAP     server versions before 4.10.17, before 4.11.11, before     4.12.4 used in a AC DC configuration. A Samba LDAP user     could use this flaw to crash samba.(CVE-2020-10760)

  - There is an issue in all samba 4.11.x versions before     4.11.5, all samba 4.10.x versions before 4.10.12 and     all samba 4.9.x versions before 4.9.18, where the     removal of the right to create or modify a subtree     would not automatically be taken away on all domain     controllers.(CVE-2019-14902)

  - All samba versions 4.9.x before 4.9.18, 4.10.x before     4.10.12 and 4.11.x before 4.11.5 have an issue where if     it is set with 'log level = 3' (or above) then the     string obtained from the client, after a failed     character conversion, is printed. Such strings can be     provided during the NTLMSSP authentication exchange. In     the Samba AD DC in particular, this may cause a     long-lived process(such as the RPC server) to     terminate. (In the file server case, the most likely     target, smbd, operates as process-per-client and so a     crash there is harmless).(CVE-2019-14907)

  - All Samba versions 4.x.x before 4.9.17, 4.10.x before     4.10.11 and 4.11.x before 4.11.3 have an issue, where     the (poorly named) dnsserver RPC pipe provides     administrative facilities to modify DNS records and     zones. Samba, when acting as an AD DC, stores DNS     records in LDAP. In AD, the default permissions on the     DNS partition allow creation of new records by     authenticated users. This is used for example to allow     machines to self-register in DNS. If a DNS record was     created that case-insensitively matched the name of the     zone, the ldb_qsort() and dns_name_compare() routines     could be confused into reading memory prior to the list     of DNS entries when responding to DnssrvEnumRecords()     or DnssrvEnumRecords2() and so following invalid memory     as a pointer.(CVE-2019-14861)

  - All Samba versions 4.x.x before 4.9.17, 4.10.x before     4.10.11 and 4.11.x before 4.11.3 have an issue, where     the S4U (MS-SFU) Kerberos delegation model includes a     feature allowing for a subset of clients to be opted     out of constrained delegation in any way, either     S4U2Self or regular Kerberos authentication, by forcing     all tickets for these clients to be non-forwardable. In     AD this is implemented by a user attribute     delegation_not_allowed (aka not-delegated), which     translates to disallow-forwardable. However the Samba     AD DC does not do that for S4U2Self and does set the     forwardable flag even if the impersonated client has     the not-delegated flag set.(CVE-2019-14870)

  - A flaw was found in the samba client, all samba     versions before samba 4.11.2, 4.10.10 and 4.9.15, where     a malicious server can supply a pathname to the client     with separators. This could allow the client to access     files and folders outside of the SMB network pathnames.
    An attacker could use this vulnerability to create     files outside of the current working directory using     the privileges of the client user.(CVE-2019-10218)

  - A flaw was found in Samba, all versions starting samba     4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2,     in the way it handles a user password change or a new     password for a samba user. The Samba Active Directory     Domain Controller can be configured to use a custom     script to check for password complexity. This     configuration can fail to verify password complexity     when non-ASCII characters are used in the password,     which could lead to weak passwords being set for samba     users, making it vulnerable to dictionary     attacks.(CVE-2019-14833)

  - A flaw was found in samba 4.0.0 before samba 4.9.15 and     samba 4.10.x before 4.10.10. An attacker can crash AD     DC LDAP server via dirsync resulting in denial of     service. Privilege escalation is not possible with this     issue.(CVE-2019-14847)

  - A flaw was found in the AD DC NBT server in all Samba     versions before 4.10.17, before 4.11.11 and before     4.12.4. A samba user could send an empty UDP packet to     cause the samba server to crash.(CVE-2020-14303)

  - A flaw was found in samba's Heimdal KDC implementation,     versions 4.8.x up to, excluding 4.8.12, 4.9.x up to,     excluding 4.9.8 and 4.10.x up to, excluding 4.10.3,     when used in AD DC mode. A man in the middle attacker     could use this flaw to intercept the request to the KDC     and replace the user name (principal) in the request     with any desired user name (principal) that exists in     the KDC effectively obtaining a ticket for that     principal.(CVE-2018-16860)

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 samba packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in samba 4.0.0 before samba 4.9.15 and     samba 4.10.x before 4.10.10. An attacker can crash AD     DC LDAP server via dirsync resulting in denial of     service. Privilege escalation is not possible with this     issue.(CVE-2019-14847)

  - A flaw was found in Samba, all versions starting samba     4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2,     in the way it handles a user password change or a new     password for a samba user. The Samba Active Directory     Domain Controller can be configured to use a custom     script to check for password complexity. This     configuration can fail to verify password complexity     when non-ASCII characters are used in the password,     which could lead to weak passwords being set for samba     users, making it vulnerable to dictionary     attacks.(CVE-2019-14833)

  - A flaw was found in the samba client, all samba     versions before samba 4.11.2, 4.10.10 and 4.9.15, where     a malicious server can supply a pathname to the client     with separators. This could allow the client to access     files and folders outside of the SMB network pathnames.
    An attacker could use this vulnerability to create     files outside of the current working directory using     the privileges of the client user.(CVE-2019-10218)

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 samba packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in samba 4.0.0 before samba 4.9.15 and     samba 4.10.x before 4.10.10. An attacker can crash AD     DC LDAP server via dirsync resulting in denial of     service. Privilege escalation is not possible with this     issue.(CVE-2019-14847)

  - A flaw was found in Samba, all versions starting samba     4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2,     in the way it handles a user password change or a new     password for a samba user. The Samba Active Directory     Domain Controller can be configured to use a custom     script to check for password complexity. This     configuration can fail to verify password complexity     when non-ASCII characters are used in the password,     which could lead to weak passwords being set for samba     users, making it vulnerable to dictionary     attacks.(CVE-2019-14833)

  - A flaw was found in the samba client, all samba     versions before samba 4.11.2, 4.10.10 and 4.9.15, where     a malicious server can supply a pathname to the client     with separators. This could allow the client to access     files and folders outside of the SMB network pathnames.
    An attacker could use this vulnerability to create     files outside of the current working directory using     the privileges of the client user.(CVE-2019-10218)

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 samba packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - Samba from version 4.9.0 and before version 4.9.3 that     have AD DC configurations watching for bad passwords     (to restrict brute forcing of passwords) in a window of     more than 3 minutes may not watch for bad passwords at     all. The primary risk from this issue is with regards     to domains that have been upgraded from Samba 4.8 and     earlier. In these cases the manual testing done to     confirm an organisation's password policies apply as     expected may not have been re-done after the     upgrade.(CVE-2018-16857)

  - Samba from version 4.9.0 and before version 4.9.3 is     vulnerable to a NULL pointer de-reference. During the     processing of an DNS zone in the DNS management DCE/RPC     server, the internal DNS server or the Samba DLZ plugin     for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS     property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property     is set, the server will follow a NULL pointer and     terminate. There is no further vulnerability associated     with this issue, merely a denial of     service.(CVE-2018-16852)

  - A flaw was found in samba versions 4.9.x up to 4.9.13,     samba 4.10.x up to 4.10.8 and samba 4.11.x up to     4.11.0rc3, when certain parameters were set in the     samba configuration file. An unauthenticated attacker     could use this flaw to escape the shared directory and     access the contents of directories outside the     share.(CVE-2019-10197)

  - A flaw was found in samba 4.0.0 before samba 4.9.15 and     samba 4.10.x before 4.10.10. An attacker can crash AD     DC LDAP server via dirsync resulting in denial of     service. Privilege escalation is not possible with this     issue.(CVE-2019-14847)

  - A flaw was found in Samba, all versions starting samba     4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2,     in the way it handles a user password change or a new     password for a samba user. The Samba Active Directory     Domain Controller can be configured to use a custom     script to check for password complexity. This     configuration can fail to verify password complexity     when non-ASCII characters are used in the password,     which could lead to weak passwords being set for samba     users, making it vulnerable to dictionary     attacks.(CVE-2019-14833)

  - A flaw was found in the samba client, all samba     versions before samba 4.11.2, 4.10.10 and 4.9.15, where     a malicious server can supply a pathname to the client     with separators. This could allow the client to access     files and folders outside of the SMB network pathnames.
    An attacker could use this vulnerability to create     files outside of the current working directory using     the privileges of the client user.(CVE-2019-10218)

  - A flaw was found in the way an LDAP search expression     could crash the shared LDAP server process of a samba     AD DC in samba before version 4.10. An authenticated     user, having read permissions on the LDAP server, could     use this flaw to cause denial of     service.(CVE-2019-3824)

  - All Samba versions 4.x.x before 4.9.17, 4.10.x before     4.10.11 and 4.11.x before 4.11.3 have an issue, where     the S4U (MS-SFU) Kerberos delegation model includes a     feature allowing for a subset of clients to be opted     out of constrained delegation in any way, either     S4U2Self or regular Kerberos authentication, by forcing     all tickets for these clients to be non-forwardable. In     AD this is implemented by a user attribute     delegation_not_allowed (aka not-delegated), which     translates to disallow-forwardable. However the Samba     AD DC does not do that for S4U2Self and does set the     forwardable flag even if the impersonated client has     the not-delegated flag set.(CVE-2019-14870)

  - All Samba versions 4.x.x before 4.9.17, 4.10.x before     4.10.11 and 4.11.x before 4.11.3 have an issue, where     the (poorly named) dnsserver RPC pipe provides     administrative facilities to modify DNS records and     zones. Samba, when acting as an AD DC, stores DNS     records in LDAP. In AD, the default permissions on the     DNS partition allow creation of new records by     authenticated users. This is used for example to allow     machines to self-register in DNS. If a DNS record was     created that case-insensitively matched the name of the     zone, the ldb_qsort() and dns_name_compare() routines     could be confused into reading memory prior to the list     of DNS entries when responding to DnssrvEnumRecords()     or DnssrvEnumRecords2() and so following invalid memory     as a pointer.(CVE-2019-14861)

  - A flaw was found in samba's Heimdal KDC implementation,     versions 4.8.x up to, excluding 4.8.12, 4.9.x up to,     excluding 4.9.8 and 4.10.x up to, excluding 4.10.3,     when used in AD DC mode. A man in the middle attacker     could use this flaw to intercept the request to the KDC     and replace the user name (principal) in the request     with any desired user name (principal) that exists in     the KDC effectively obtaining a ticket for that     principal.(CVE-2018-16860)

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 samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the samba client, all samba     versions before samba 4.11.2, 4.10.10 and 4.9.15, where     a malicious server can supply a pathname to the client     with separators. This could allow the client to access     files and folders outside of the SMB network pathnames.
    An attacker could use this vulnerability to create     files outside of the current working directory using     the privileges of the client user.(CVE-2019-10218)

  - A flaw was found in Samba, all versions starting samba     4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2,     in the way it handles a user password change or a new     password for a samba user. The Samba Active Directory     Domain Controller can be configured to use a custom     script to check for password complexity. This     configuration can fail to verify password complexity     when non-ASCII characters are used in the password,     which could lead to weak passwords being set for samba     users, making it vulnerable to dictionary     attacks.(CVE-2019-14833)

  - A flaw was found in samba 4.0.0 before samba 4.9.15 and     samba 4.10.x before 4.10.10. An attacker can crash AD     DC LDAP server via dirsync resulting in denial of     service. Privilege escalation is not possible with this     issue.(CVE-2019-14847)

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 samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in Samba, all versions starting samba     4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2,     in the way it handles a user password change or a new     password for a samba user. The Samba Active Directory     Domain Controller can be configured to use a custom     script to check for password complexity. This     configuration can fail to verify password complexity     when non-ASCII characters are used in the password,     which could lead to weak passwords being set for samba     users, making it vulnerable to dictionary     attacks.(CVE-2019-14833)

  - A flaw was found in samba 4.0.0 before samba 4.9.15 and     samba 4.10.x before 4.10.10. An attacker can crash AD     DC LDAP server via dirsync resulting in denial of     service. Privilege escalation is not possible with this     issue.(CVE-2019-14847)

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.

Update to Samba 4.9.15 - Security fixes for CVE-2019-10218, CVE-2019-14833, CVE-2019-14847

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

Update code to deal with removal of DES support in MIT Kerberos.

----

Update to Samba 4.11.2 - Security fixes for CVE-2019-10218, CVE-2019-14833

----

Since MIT Kerberos deprecated use of DES encryption type, restore Samba AD domain controller functionality by not using DES encryption keys. Only AES and RC4 keys would work.

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

This update for samba fixes the following issues :

Security issues fixed :

  - CVE-2019-14847: User with 'get changes' permission can     crash AD DC LDAP server via dirsync (bsc#1154598).

  - CVE-2019-10218: Client code can return filenames     containing path separators (bsc#1144902).

  - CVE-2019-14833: Fixed Accent with 'check script     password' where the Samba AD DC check password script     does not receive the full password (bsc#1154289).

Other issues fixed :

  - Fix vfs_ceph realpath (bsc#1134452).

  - MacOS credit accounting breaks with async SESSION SETUP     (bsc#1125601).

  - Mac OS X SMB2 implmenetation sees Input/output error or     Resource temporarily unavailable and drops connection

  - Explicitly enable libcephfs POSIX ACL support     (bsc#1130245).

  - Fix vfs_ceph ftruncate and fallocate handling     (bsc#1127153). This update was imported from the     SUSE:SLE-15:Update update project.

The version of Samba running on the remote host is 4.5.x, 4.6.x, 4.7.x, 4.8.x, 4.9.x prior to 4.9.15, 4.10.x prior to 4.10.10, or 4.11.x prior to 4.11.2. It is, therefore, affected by a password complexity check bypass vulnerability. An authenticated attacker could use this flaw to change their password to a weak password that fails the configured password complexity check.

This update for provides the following fixes :

Following security issues were fixed :

  - CVE-2019-14847: User with 'get changes' permission could     have crashed AD DC LDAP server via dirsync     (bsc#1154598).

  - CVE-2019-10218: Client code could have returned     filenames containing path separators (bsc#1144902).

  - CVE-2019-14833: Accent with 'check script password'     where Samba AD DC check password script did not receive     the full password (bsc#1154289).

Also following non-security issues were fixed :

  - Fix auth problems when printing via smbspool backend     with kerberos. (bsc#1148539)

  - Fix broken username/password authentication with CUPS     and smbspool. (bsc#1152143)

This update was imported from the SUSE:SLE-15-SP1:Update update project.

The samba project reports :

Malicious servers can cause Samba client code to return filenames containing path separators to calling code.

When the password contains multi-byte (non-ASCII) characters, the check password script does not receive the full password string.

Users with the 'get changes' extended access right can crash the AD DC LDAP server by requesting an attribute using the range= syntax.

This update for samba fixes the following issues :

Security issues fixed :

CVE-2019-14847: User with 'get changes' permission can crash AD DC LDAP server via dirsync (bsc#1154598).

CVE-2019-10218: Client code can return filenames containing path separators (bsc#1144902).

CVE-2019-14833: Fixed Accent with 'check script password' where the Samba AD DC check password script does not receive the full password (bsc#1154289).

Other issues fixed: Fix vfs_ceph realpath (bsc#1134452).

MacOS credit accounting breaks with async SESSION SETUP (bsc#1125601).

Mac OS X SMB2 implmenetation sees Input/output error or Resource temporarily unavailable and drops connection

Explicitly enable libcephfs POSIX ACL support (bsc#1130245).

Fix vfs_ceph ftruncate and fallocate handling (bsc#1127153).

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.

This update for provides the following fixes :

Following security issues were fixed :

CVE-2019-14847: User with 'get changes' permission could have crashed AD DC LDAP server via dirsync (bsc#1154598).

CVE-2019-10218: Client code could have returned filenames containing path separators (bsc#1144902).

CVE-2019-14833: Accent with 'check script password' where Samba AD DC check password script did not receive the full password (bsc#1154289).

Also 

The update package also includes non-security fixes. See advisory for details.

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 Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4167-1 advisory.

    Michael Hanselmann discovered that the Samba client code incorrectly handled path separators. If a user     were tricked into connecting to a malicious server, a remote attacker could use this issue to cause the     client to access local pathnames instead of network pathnames. (CVE-2019-10218)

    Simon Fonteneau and Bjrn Baumbach discovered that Samba incorrectly handled the check password script.
    This issue could possibly bypass custom password complexity checks, contrary to expectations. This issue     only affected Ubuntu 18.04 LTS, Ubuntu 19.04, and Ubuntu 19.10. (CVE-2019-14833)

    Adam Xu discovered that Samba incorrectly handled the dirsync LDAP control. A remote attacker with get     changes permissions could possibly use this issue to cause Samba to crash, resulting in a denial of     service. (CVE-2019-14847)

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.

ID	Name	Product	Family	Severity
181444	Debian DLA-3563-1 : samba - LTS security update	Nessus	Debian Local Security Checks	medium
150107	Debian DLA-2668-1 : samba security update	Nessus	Debian Local Security Checks	medium
146748	EulerOS 2.0 SP2 : samba (EulerOS-SA-2021-1357)	Nessus	Huawei Local Security Checks	high
140877	EulerOS 2.0 SP3 : samba (EulerOS-SA-2020-2110)	Nessus	Huawei Local Security Checks	high
134736	EulerOS Virtualization 3.0.2.2 : samba (EulerOS-SA-2020-1270)	Nessus	Huawei Local Security Checks	medium
134520	EulerOS Virtualization for ARM 64 3.0.2.0 : samba (EulerOS-SA-2020-1231)	Nessus	Huawei Local Security Checks	medium
132794	EulerOS Virtualization for ARM 64 3.0.5.0 : samba (EulerOS-SA-2020-1040)	Nessus	Huawei Local Security Checks	critical
131821	EulerOS 2.0 SP5 : samba (EulerOS-SA-2019-2547)	Nessus	Huawei Local Security Checks	medium
131369	EulerOS 2.0 SP8 : samba (EulerOS-SA-2019-2303)	Nessus	Huawei Local Security Checks	medium
131040	Fedora 29 : 2:samba (2019-703e299870)	Nessus	Fedora Local Security Checks	medium
130987	Fedora 31 : 2:samba (2019-57d43f3b58)	Nessus	Fedora Local Security Checks	medium
130889	openSUSE Security Update : samba (openSUSE-2019-2458)	Nessus	SuSE Local Security Checks	medium
130628	Samba 4.5.x / 4.6.x / 4.7.x / 4.8.x / 4.9.x < 4.9.15 / 4.10.x < 4.10.10 / 4.11.x < 4.11.2 Password Complexity Check Bypass (CVE-2019-14833)	Nessus	Misc.	medium
130581	openSUSE Security Update : samba (openSUSE-2019-2442)	Nessus	SuSE Local Security Checks	medium
130439	FreeBSD : samba -- multiple vulnerabilities (50a1bbc9-fb80-11e9-9e70-005056a311d1)	Nessus	FreeBSD Local Security Checks	medium
130426	SUSE SLED15 / SLES15 Security Update : samba (SUSE-SU-2019:2868-1)	Nessus	SuSE Local Security Checks	medium
130425	SUSE SLED15 / SLES15 Security Update : samba (SUSE-SU-2019:2866-1)	Nessus	SuSE Local Security Checks	medium
130392	Ubuntu 16.04 LTS / 18.04 LTS : Samba vulnerabilities (USN-4167-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

Analytics

CVE-2019-14833

medium

Tenable Plugins

medium

medium

high

high

medium

medium

critical

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium