Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 542
Alerts This Week
Warning Icon 1 542

SUSE: 2021:1445-1 Important: Samba Buffer Overrun Threat

suse
Calendar Grey April 29, 2021
Scroller Suse
A SUSE security update resolves critical Samba buffer overrun issue with patch instructions for affected systems.
An update that solves one vulnerability and has two fixes is now available

Summary

This update for samba fixes the following issues: - CVE-2021-20254: Fixed a buffer overrun in sids_to_unixids() (bsc#1184677). - Avoid free'ing our own pointer in memcache when memcache_trim attempts to reduce cache size (bsc#1179156). - Adjust smbcacls '--propagate-inheritance' feature to align with upstream (bsc#1178469). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Server for SAP 15: zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2021-1445=1 - SUSE Linux Enterprise Server 15-LTSS: zypper in -t patch SUSE-SLE-Product-SLES-15-2021-1445=1 - SUSE Linux Enterprise High Performance Computing 15-LTSS:

Topics%20covered

Topics Covered

security advisory critical software update buffer overrun samba suse patch instructions

References

#1178469 #1179156 #1184677

Cross- CVE-2021-20254

CVSS scores:

CVE-2021-20254 (SUSE): 7.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Affected Products:

SUSE Linux Enterprise Server for SAP 15

SUSE Linux Enterprise Server 15-LTSS

SUSE Linux Enterprise High Performance Computing 15-LTSS

SUSE Linux Enterprise High Performance Computing 15-ESPOS

SUSE Linux Enterprise High Availability 15

https://www.suse.com/security/cve/CVE-2021-20254.html

https://bugzilla.suse.com/1178469

https://bugzilla.suse.com/1179156

https://bugzilla.suse.com/1184677

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:1445-1
Rating: important

Topics%20covered

Topics Covered

security advisory critical software update buffer overrun samba suse patch instructions

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.