CVE-2023-40481

Name	CVE-2023-40481
Description	7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. 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. Was ZDI-CAN-18589.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
7zip (PTS)	bookworm	22.01+dfsg-8+deb12u1	vulnerable
	trixie	24.08+dfsg-1	fixed
	sid	24.08+dfsg-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
7zip	source	(unstable)	23.01+dfsg-1

Notes

[bookworm] - 7zip <no-dsa> (Minor issue; will be fixed via point release)
https://www.zerodayinitiative.com/advisories/ZDI-23-1164/
https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/