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SUSE: 2021:3649-1 Critical: Samba Privilege Escalation and Auth Issues

suse
Calendar Grey November 10, 2021
Scroller Suse
SUSE Security Update addresses vulnerabilities in samba. The update includes severity rating, detailed patching guidance, and a list of impacted products.
An update that fixes three vulnerabilities is now available

Summary

This update for samba fixes the following issues: - CVE-2016-2124: Fixed not to fallback to non spnego authentication if we require kerberos (bsc#1014440). - CVE-2020-25717: Fixed privilege escalation inside an AD Domain where a user could become root on domain members (bsc#1192284). - CVE-2021-23192: Fixed dcerpc requests to don't check all fragments against the first auth_state (bsc#1192214). 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: zypper in -t patch SUSE-SLE-SDK-12-SP5-2021-3649=1 - SUSE Linux Enterprise Server 12-SP5: zypper in -t patch SUSE-SLE-SERVER-12-SP5-2021-3649=1

Topics%20covered

Topics Covered

security advisory critical privilege escalation samba suse auth issues

References

#1014440 #1192214 #1192284

Cross- CVE-2016-2124 CVE-2020-25717 CVE-2021-23192

CVSS scores:

CVE-2020-25717 (SUSE): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVE-2021-23192 (SUSE): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected Products:

SUSE Linux Enterprise Software Development Kit 12-SP5

SUSE Linux Enterprise Server 12-SP5

SUSE Linux Enterprise High Availability 12-SP5

https://www.suse.com/security/cve/CVE-2016-2124.html

https://www.suse.com/security/cve/CVE-2020-25717.html

https://www.suse.com/security/cve/CVE-2021-23192.html

https://bugzilla.suse.com/1014440

https://bugzilla.suse.com/1192214

https://bugzilla.suse.com/1192284

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:3649-1
Rating: important

Topics%20covered

Topics Covered

security advisory critical privilege escalation samba suse auth issues

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