CVE-2020-10704

Name	CVE-2020-10704
Description	A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.
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-2463-1
Debian Bugs	960188

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
samba (PTS)	bullseye (security), bullseye	2:4.13.13+dfsg-1~deb11u6	fixed
	bookworm, bookworm (security)	2:4.17.12+dfsg-0+deb12u1	fixed
	sid, trixie	2:4.21.2+dfsg-4	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
samba	source	stretch	2:4.5.16+dfsg-1+deb9u3		DLA-2463-1
samba	source	(unstable)	2:4.12.3+dfsg-2			960188

Notes

[buster] - samba <postponed> (Can be fixed along in future DSA)
https://bugzilla.samba.org/show_bug.cgi?id=14334
https://www.samba.org/samba/security/CVE-2020-10704.html