Bug 1226180 (CVE-2023-39179)

Summary:	VUL-0: CVE-2023-39179: kernel: ksmbd: Read Request Out-Of-Bounds Read Information Disclosure Vulnerability
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:	Major
Priority:	P3 - Medium	CC:	andrea.mattiazzo, ematsumiya, vasant.karasulli
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/410021/
Whiteboard:	CVSSv3.1:SUSE:CVE-2023-39179:7.5:(AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-06-11 09:09:12 UTC

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability. However, only systems with ksmbd enabled are vulnerable.

The specific flaw exists within the handling of SMB2 read requests. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.

References:
https://www.zerodayinitiative.com/advisories/ZDI-24-588/
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-39179

Patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e202a1e8634b186da38cbbff85382ea2b9e297cf

Comment 6 Andrea Mattiazzo 2024-06-17 12:25:34 UTC

All done, closing.