Bug 1214697 (CVE-2023-40481)

Summary: VUL-0: CVE-2023-40481: 7zip: SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Product: [Novell Products] SUSE Security Incidents Reporter: Gabriele Sonnu <gabriele.sonnu>
Component: IncidentsAssignee: Security Team bot <security-team>
Status: RESOLVED UPSTREAM QA Contact: Security Team bot <security-team>
Severity: Normal    
Priority: P3 - Medium CC: security-team
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/376209/
Whiteboard: CVSSv3.1:SUSE:CVE-2023-40481:7.8:(AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description Gabriele Sonnu 2023-08-28 13:02:18 UTC 
CVE-2023-40481

This vulnerability allows remote attackers to execute arbitrary code on affected
installations of 7-Zip. User interaction is required to exploit this
vulnerability in that the target must visit a malicious page or open a malicious
file.

The specific flaw exists within the parsing of SQFS files. The issue results
from the lack of proper validation of user-supplied data, which can result in a
write past the end of an allocated buffer. An attacker can leverage this
vulnerability to execute code in the context of the current process.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-40481
https://www.zerodayinitiative.com/advisories/ZDI-23-1164/
Comment 1 Gabriele Sonnu 2023-08-28 13:18:51 UTC 
Seems to be fixed in 7zip 23.00. All our supported codestreams are on 23.01, so not affected.