Bug 1214698 (CVE-2023-31102)

Summary:	VUL-0: CVE-2023-31102: 7zip: 7Z File Parsing Integer Underflow Remote Code Execution Vulnerability
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Gabriele Sonnu <gabriele.sonnu>
Component:	Incidents	Assignee:	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/376208/
Whiteboard:	CVSSv3.1:SUSE:CVE-2023-31102:7.8:(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 13:03:10 UTC

CVE-2023-31102

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 7Z files. The issue results from
the lack of proper validation of user-supplied data, which can result in an
integer underflow before writing to memory. 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-2023-31102
https://www.zerodayinitiative.com/advisories/ZDI-23-1165/

Comment 1 Gabriele Sonnu 2023-08-28 13:18:21 UTC

Seems to be fixed in 7zip 23.00. All our supported codestreams are on 23.01, so not affected.