DescriptionInteger overflow in the read_fragment_table_4 function in unsquash-4.c in Squashfs and sasquatch allows remote attackers to cause a denial of service (application crash) via a crafted input, which triggers a stack-based buffer overflow.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs793467

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
squashfs-tools (PTS)buster, buster (security)1:4.3-12+deb10u2fixed
bullseye (security), bullseye1:4.4-2+deb11u2fixed
bookworm, sid1:4.5.1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[jessie] - squashfs-tools <no-dsa> (Minor issue)
[wheezy] - squashfs-tools <no-dsa> (Minor issue)
[squeeze] - squashfs-tools <no-dsa> (Minor issue)
Further more complete fixes went into 1:4.3+git190815-1

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