Bug 1226175 (ZDI-24-587)

Summary: VUL-0: ZDI-24-587: kernel: Linux Kernel ksmbd SetInfo Request Out-Of-Bounds Read Information Disclosure Vulnerability
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: Enzo Matsumiya <ematsumiya>
Status: NEW --- QA Contact: Security Team bot <security-team>
Severity: Normal    
Priority: P3 - Medium CC: andrea.mattiazzo, vasant.karasulli
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/410022/
Whiteboard:
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2024-06-11 07:59:15 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 parsing of SMB2 SetInfo 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-24-587/
https://lore.kernel.org/all/20230813211710.859658800@linuxfoundation.org/

Patch:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=79ed288cef201f1f212dfb934bcaac75572fb8f6
Comment 1 Andrea Mattiazzo 2024-06-11 08:00:45 UTC 
CVE still not assigned.

CVSS: 6.8, AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N