CVE-2018-15501

Name	CVE-2018-15501
Description	In ng_pkt in transports/smart_pkt.c in libgit2 before 0.26.6 and 0.27.x before 0.27.4, a remote attacker can send a crafted smart-protocol "ng" packet that lacks a '\0' byte to trigger an out-of-bounds read that leads to DoS.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1477-1, DLA-2936-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libgit2 (PTS)	buster	0.27.7+dfsg.1-0.2	fixed
	buster (security)	0.27.7+dfsg.1-0.2+deb10u2	fixed
	bullseye	1.1.0+dfsg.1-4+deb11u1	fixed
	bullseye (security)	1.1.0+dfsg.1-4+deb11u2	fixed
	bookworm	1.5.1+ds-1	fixed
	bookworm (security)	1.5.1+ds-1+deb12u1	fixed
	sid, trixie	1.7.2+ds-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin
libgit2	source	jessie	0.21.1-3+deb8u1		DLA-1477-1
libgit2	source	stretch	0.25.1+really0.24.6-1+deb9u1		DLA-2936-1
libgit2	source	(unstable)	0.27.4+dfsg.1-0.1	low

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9406
https://github.com/libgit2/libgit2/commit/1f9a8510e1d2f20ed7334eeeddb92c4dd8e7c649