CVE-2021-3402

Name	CVE-2021-3402
Description	An integer overflow and several buffer overflow reads in libyara/modules/macho/macho.c in YARA v4.0.3 and earlier could allow an attacker to either cause denial of service or information disclosure via a malicious Mach-O file. Affects all versions before libyara 4.0.4
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
yara (PTS)	stretch	3.5.0+dfsg-9	vulnerable
	buster	3.9.0-1	vulnerable
	bullseye	4.0.5-1	fixed
	bookworm	4.1.2-1	fixed
	sid	4.1.3-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
yara	source	(unstable)	4.0.4-1

Notes

[buster] - yara <no-dsa> (Minor issue)
[stretch] - yara <postponed> (Minor issue; can be fixed with next DLA)
https://www.openwall.com/lists/oss-security/2021/01/29/2
https://www.x41-dsec.de/lab/advisories/x41-2021-001-yara/