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SUSE: 2021:0225-1 Important: Sudo Buffer Overflow and Directory Attack Fix

suse
Calendar Grey January 26, 2021
Dist Suse Esm H88
Red Hat Security Patch addresses various vulnerabilities in OpenSSH, bolstering system integrity and reliability.
An update that solves three vulnerabilities and has one errata is now available

Summary

This update for sudo fixes the following issues: - A Heap-based buffer overflow in sudo could be exploited to allow a user to gain root privileges [bsc#1181090,CVE-2021-3156] - It was possible for a user to test for the existence of a directory due to a Race Condition in `sudoedit` [bsc#1180684,CVE-2021-23239] - A Possible Symlink Attack vector existed in `sudoedit` if SELinux was running in permissive mode [bsc#1180685, CVE-2021-23240] - It was possible for a User to enable Debug Settings not Intended for them [bsc#1180687] 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 Software Development Kit 12-SP5:

Topics%20covered

Topics Covered

security advisory buffer overflow sudo race condition important fix SUSE Linux directory attack

References

#1180684 #1180685 #1180687 #1181090

Cross- CVE-2021-23239 CVE-2021-23240 CVE-2021-3156

Affected Products:

SUSE Linux Enterprise Software Development Kit 12-SP5

SUSE Linux Enterprise Server 12-SP5

https://www.suse.com/security/cve/CVE-2021-23239.html

https://www.suse.com/security/cve/CVE-2021-23240.html

https://www.suse.com/security/cve/CVE-2021-3156.html

https://bugzilla.suse.com/1180684

https://bugzilla.suse.com/1180685

https://bugzilla.suse.com/1180687

https://bugzilla.suse.com/1181090

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:0225-1
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow sudo race condition important fix SUSE Linux directory attack

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