DescriptionAn issue was discovered in apng2gif 1.7. There is an integer overflow resulting in a heap-based buffer overflow. This is related to the read_chunk function making an unchecked addition of 12.
SourceCVE (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 severitymedium
Debian Bugs854447

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
apng2gif (PTS)stretch1.7-1vulnerable
bullseye, sid1.8-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
apng2gifsourcewheezy(not affected)
apng2gifsourcejessie(not affected)


[stretch] - apng2gif <no-dsa> (Minor issue; can be fixed via point release)
[jessie] - apng2gif <not-affected> (Vulnerable code introduced later with refactoring)
[wheezy] - apng2gif <not-affected> (Vulnerable code introduced later with refactoring)

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