CVE-2020-12243

Name	CVE-2020-12243
Description	In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in denial of service (daemon crash).
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-2199-1, DSA-4666-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
openldap (PTS)	bullseye (security), bullseye	2.4.57+dfsg-3+deb11u1	fixed
	bookworm	2.5.13+dfsg-5	fixed
	sid, trixie	2.5.18+dfsg-3	fixed

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

Package	Type	Release	Fixed Version	Origin
openldap	source	jessie	2.4.40+dfsg-1+deb8u6	DLA-2199-1
openldap	source	stretch	2.4.44+dfsg-5+deb9u4	DSA-4666-1
openldap	source	buster	2.4.47+dfsg-3+deb10u2	DSA-4666-1
openldap	source	(unstable)	2.4.50+dfsg-1

Notes

https://bugs.openldap.org/show_bug.cgi?id=9202
https://git.openldap.org/openldap/openldap/-/commit/d38d48fc8f572dedfb67b9da61a2ba3b125ced91 (master)
https://git.openldap.org/openldap/openldap/-/commit/98464c11df8247d6a11b52e294ba5dd4f0380440 (OPENLDAP_REL_ENG_2_4_50)