Bug 1216440 (CVE-2023-5568)

Summary:	VUL-0: CVE-2023-5568: samba: heap buffer overflow with freshness tokens in the Heimdal KDC
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	nopower, samba, thomas.leroy
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/382496/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

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