Bug 1226178 (CVE-2023-4458)

Summary: VUL-0: CVE-2023-4458: kernel: ksmbd: smb2_open Out-Of-Bounds Read Information Disclosure Vulnerability
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: Security Team bot <security-team>
Status: RESOLVED FIXED QA Contact: Security Team bot <security-team>
Severity: Minor    
Priority: P3 - Medium CC: andrea.mattiazzo, vasant.karasulli
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/410019/
Whiteboard: CVSSv3.1:SUSE:CVE-2023-4458:4.0:(AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2024-06-11 08:45:49 UTC 
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication may or may not be required to exploit this vulnerability, depending upon configuration. Furthermore, only systems with ksmbd enabled are vulnerable.

The specific flaw exists within the parsing of extended attributes. 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-24-590/
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-4458

Patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17d5b135bb720832364e8f55f6a887a3c7ec8fdb
Comment 2 Enzo Matsumiya 2024-06-13 16:12:57 UTC 
ksmbd is disabled in SLE/Leap and TW should get its fixes through version bumps.

Reassigning.
Comment 3 Andrea Mattiazzo 2024-06-14 09:44:07 UTC 
All done, closing.