CVE-2021-27212

Name	CVE-2021-27212
Description	In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2574-1, DSA-4860-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
openldap (PTS)	bookworm	2.5.13+dfsg-5	fixed
	trixie	2.6.10+dfsg-1	fixed
	forky, sid	2.6.14+dfsg-2	fixed

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

Package	Type	Release	Fixed Version	Origin
openldap	source	stretch	2.4.44+dfsg-5+deb9u8	DLA-2574-1
openldap	source	buster	2.4.47+dfsg-3+deb10u6	DSA-4860-1
openldap	source	(unstable)	2.4.57+dfsg-2

Notes

https://bugs.openldap.org/show_bug.cgi?id=9454
trunk: https://git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7c30b0
REL_ENG 2.4.x: https://git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684af6c30