Bug 1216440 (CVE-2023-5568) - VUL-0: CVE-2023-5568: samba: heap buffer overflow with freshness tokens in the Heimdal KDC
Summary: VUL-0: CVE-2023-5568: samba: heap buffer overflow with freshness tokens in th...
Status: RESOLVED FIXED
Alias: CVE-2023-5568
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/382496/
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-10-20 10:14 UTC by SMASH SMASH
Modified: 2023-10-23 06:54 UTC (History)
3 users (show)

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Found By: Security Response Team
Services Priority:
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Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description SMASH SMASH 2023-10-20 10:14:57 UTC 
The KDC doesn’t allocate enough memory for the ‘heim_octet_string’ containing the freshness token. Potential denial of service and likely low impact. Patched in Samba 4.19.2.

Reference: 
- https://www.samba.org/samba/history/samba-4.19.2.html
- https://bugzilla.samba.org/show_bug.cgi?id=15491

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-5568
https://github.com/samba-team/samba/commit/3280893ae80507e36653a0c7da03c82b88ece30b
Comment 1 Thomas Leroy 2023-10-20 10:16:22 UTC 
Issue added in 4.19.0rc2, so only openSUSE:Factory is affected
Comment 2 Noel Power 2023-10-21 10:01:33 UTC 
(In reply to Thomas Leroy from comment #1)
> Issue added in 4.19.0rc2, so only openSUSE:Factory is affected

4.19.2 has this fix. 4.19.2 already been submitted and already is in factory

reassigning to sec team to close
Comment 3 Thomas Leroy 2023-10-23 06:54:02 UTC 
(In reply to Noel Power from comment #2)
> (In reply to Thomas Leroy from comment #1)
> > Issue added in 4.19.0rc2, so only openSUSE:Factory is affected
> 
> 4.19.2 has this fix. 4.19.2 already been submitted and already is in factory
> 
> reassigning to sec team to close

Thanks Noel. Closing