QID 239915

Date Published: 2021-12-01

QID 239915: Red Hat Update for samba (RHSA-2021:4866)

samba is an open-source implementation of the server message block (smb) protocol and the related common internet file system (cifs) protocol, which allow pc-compatible machines to share files, printers, and various information.

Security Fix(es):

samba: negative idmap cache entries can cause incorrect group entries in the samba file server process token (cve-2021-20254)

Affected Products:

Red Hat enterprise linux for x86_64 - extended update support 8.2 x86_64
Red Hat enterprise linux server - aus 8.2 x86_64
Red Hat enterprise linux for ibm z systems - extended update support 8.2 s390x
Red Hat enterprise linux for power, little endian - extended update support 8.2 ppc64le
Red Hat enterprise linux server - tus 8.2 x86_64
Red Hat enterprise linux for arm 64 - extended update support 8.2 aarch64
Red Hat enterprise linux server (for ibm power le) - update services for sap solutions 8.2 ppc64le
Red Hat enterprise linux server - update services for sap solutions 8.2 x86_64
Red Hat codeready linux builder for x86_64 - extended update support 8.2 x86_64
Red Hat codeready linux builder for power, little endian - extended update support 8.2 ppc64le
Red Hat codeready linux builder for ibm z systems - extended update support 8.2 s390x
Red Hat codeready linux builder for arm 64 - extended update support 8.2 aarch64

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

CVSS V3 rated as High - 6.8 severity.

CVSS V2 rated as Medium - 4.9 severity.

Solution

Upgrade to the latest packages which contain a patch.

Refer to Refer to :
Applying Package Updates to RHEL system for details.

Refer to Red Hat security advisory RHSA-2021:4866 Update to address this issue and obtain more information.

Vendor References

RHSA-2021:4866 - access.redhat.com/errata/RHSA-2021:4866

CVEs related to QID 239915

CVE-2021-20254 |

Software Advisories

Advisory ID	Software	Component	Link
RHSA-2021:4866	Red Hat Enterprise Linux		access.redhat.com/errata/RHSA-2021:4866

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