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

  - A NULL pointer dereference, or possible use-after-free     flaw was found in Samba AD LDAP server in versions     before 4.10.17, before 4.11.11 and before 4.12.4.
    Although some versions of Samba shipped with Red Hat     Enterprise Linux do not support Samba in AD mode, the     affected code is shipped with the libldb package. This     flaw allows an authenticated user to possibly trigger a     use-after-free or NULL pointer dereference. The highest     threat from this vulnerability is to system     availability.(CVE-2020-10730)

  - A flaw was found in Samba's libldb. Multiple,     consecutive leading spaces in an LDAP attribute can     lead to an out-of-bounds memory write, leading to a     crash of the LDAP server process handling the request.
    The highest threat from this vulnerability is to system     availability.(CVE-2021-20277)

  - A flaw was found in samba. Spaces used in a string     around a domain name (DN), while supposed to be     ignored, can cause invalid DN strings with spaces to     instead write a zero-byte into out-of-bounds memory,     resulting in a crash. The highest threat from this     vulnerability is to system     availability.(CVE-2020-27840)

  - 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.(CVE-2021-20254)

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. Spaces used in a string around a domain name (DN), while supposed to be     ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory,     resulting in a crash. The highest threat from this vulnerability is to system availability.
    (CVE-2020-27840)

  - 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.
    (CVE-2021-20254)

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. Spaces used in a string around a domain name (DN), while supposed to be     ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory,     resulting in a crash. The highest threat from this vulnerability is to system availability.
    (CVE-2020-27840)

  - 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.
    (CVE-2021-20254)

  - A flaw was found in Samba's libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to     an out-of-bounds memory write, leading to a crash of the LDAP server process handling the request. The     highest threat from this vulnerability is to system availability. (CVE-2021-20277)

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 samba installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2021-20254 advisory.

  - 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.
    (CVE-2021-20254)

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

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2021-2516:05 advisory.

    * samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process     token (CVE-2021-20254)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:2313 advisory.

  - 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.
    (CVE-2021-20254)

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 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4930-1 advisory.

    Peter Eriksson discovered that Samba incorrectly handled certain negative idmap cache entries. This issue     could result in certain users gaining unauthorized access to files, contrary to expected behaviour.

Tenable has extracted the preceding description block directly from the Ubuntu 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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3723 advisory.

    Red Hat Gluster Storage is a software only scale-out storage solution that     provides flexible and affordable unstructured data storage. It unifies data     storage and infrastructure, increases performance, and improves availability and manageability to meet     enterprise-level storage challenges.

    Security Fix(es):

    * samba: Netlogon elevation of privilege vulnerability (Zerologon) (CVE-2020-1472)

    * samba: Missing handle permissions check in SMB1/2/3 ChangeNotify (CVE-2020-14318)

    * samba: Unprivileged user can crash winbind (CVE-2020-14323)

    * samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process     token (CVE-2021-20254)

    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.

    Users of samba with Red Hat Gluster Storage are advised to upgrade to these updated packages.

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 SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3187-1 advisory.

    - CVE-2021-20277: Fixed an out of bounds read in ldb_handler_fold (bsc#1183574).
    - CVE-2021-20254: Fixed a buffer overrun in sids_to_unixids() (bsc#1184677).
    - CVE-2020-27840: Fixed an unauthenticated remote heap corruption via bad DNs (bsc#1183572).

    - Spec file fixes around systemd and requires (bsc#1182830)
    - Fix dependency problem upgrading from libndr0 to libndr1 (bsc#1189875)
    - Fix dependency problem upgrading from libsmbldap0 to libsmbldap2 (bsc#1189875)

Tenable has extracted the preceding description block directly from the SUSE 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 Rocky Linux 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0027 advisory.

    This advisory aggregates security fixes for the samba SRPM in CIQ LTS 8.6. It addresses 74 CVEs:
    CVE-2008-4314, CVE-2018-1050, CVE-2015-7560, CVE-2013-4475, CVE-2019-14907, and 69 more.

Tenable has extracted the preceding description block directly from the CIQ 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	Published	Updated	Severity
153277	EulerOS 2.0 SP2 : samba (EulerOS-SA-2021-2446)	Nessus	Huawei Local Security Checks	9/14/2021	9/16/2021	medium
154383	EulerOS 2.0 SP3 : samba (EulerOS-SA-2021-2615)	Nessus	Huawei Local Security Checks	10/25/2021	1/26/2022	medium
156532	EulerOS Virtualization 3.0.2.6 : samba (EulerOS-SA-2021-2883)	Nessus	Huawei Local Security Checks	1/6/2022	1/26/2022	medium
296168	Azure Linux 3.0 Security Update: samba (CVE-2021-20254)	Nessus	Azure Linux Local Security Checks	1/22/2026	1/22/2026	medium
294734	MiracleLinux 8 : samba-4.13.3-5.el8 (AXSA:2021-2516:05)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	medium
150767	CentOS 7 : samba (RHSA-2021:2313)	Nessus	CentOS Local Security Checks	6/14/2021	10/9/2024	medium
149093	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Samba vulnerability (USN-4930-1)	Nessus	Ubuntu Local Security Checks	4/30/2021	8/27/2024	medium
153886	RHEL 7 : samba (RHSA-2021:3723)	Nessus	Red Hat Local Security Checks	10/5/2021	1/12/2026	medium
153580	SUSE SLED15: ctdb / libdcerpc-binding0 / libdcerpc-binding0-32bit / etc (SUSE-SU-2021:3187-1)	Nessus	SuSE Local Security Checks	9/23/2021	6/26/2026	medium
358859	Rocky Linux 8.6 [CIQ] Security Update: ctdb / libsmbclient / libsmbclient-devel / libwbclient / etc Multiple Vulnerabilities (ciqsa-2026_0027)	Nessus	Rocky Linux Local Security Checks	10/1/2026	10/12/2026	critical

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