CVE-2019-17543

Name	CVE-2019-17543
Description	LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states "only a few specific / uncommon usages of the API are at risk."
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
Debian Bugs	943680

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
lz4 (PTS)	stretch	0.0~r131-2	vulnerable
	buster	1.8.3-1	vulnerable
	bullseye, sid	1.9.3-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
lz4	source	(unstable)	1.9.2-1	low		943680

Notes

[buster] - lz4 <ignored> (Minor issue)
[stretch] - lz4 <ignored> (Minor issue)
[jessie] - lz4 <no-dsa> (Very hard to exploit, low risk)
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15941
https://github.com/lz4/lz4/pull/756
https://github.com/lz4/lz4/pull/760