CVE-2018-20102

Name	CVE-2018-20102
Description	An out-of-bounds read in dns_validate_dns_response in dns.c was discovered in HAProxy through 1.8.14. Due to a missing check when validating DNS responses, remote attackers might be able read the 16 bytes corresponding to an AAAA record from the non-initialized part of the buffer, possibly accessing anything that was left on the stack, or even past the end of the 8193-byte buffer, depending on the value of accepted_payload_size.
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-3034-1
Debian Bugs	916308

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
haproxy (PTS)	buster	1.8.19-1+deb10u3	fixed
	buster (security)	1.8.19-1+deb10u5	fixed
	bullseye (security), bullseye	2.2.9-2+deb11u6	fixed
	bookworm, bookworm (security)	2.6.12-1+deb12u1	fixed
	trixie	2.9.5-1	fixed
	sid	2.9.7-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
haproxy	source	jessie	(not affected)
haproxy	source	stretch	1.7.5-2+deb9u1	DLA-3034-1
haproxy	source	(unstable)	1.8.15-1		916308

Notes

[jessie] - haproxy <not-affected> (Vulnerable code not present)
http://git.haproxy.org/?p=haproxy.git;a=commit;h=efbbdf72992cd20458259962346044cafd9331c0