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).
Affected products
openldap: openldap; debian: debian linux; opensuse: leap; canonical: ubuntu linux; netapp: cloud backup; netapp: steelstore cloud integrated storage; netapp: h410c firmware; netapp: h410c; netapp: h300s firmware; netapp: h300s; netapp: h500s firmware; netapp: h500s; netapp: h700s firmware; netapp: h700s; netapp: h300e firmware
References10
- bugs.openldap.org/show_bug.cgi?id=9202 ExploitPatchVendor Advisory
- git.openldap.org/openldap/openldap/-/blob/OPENLDAP_REL_ENG_2_4/… Release NotesVendor Advisory
- git.openldap.org/openldap/openldap/-/commit/98464c11df8247d6a11… PatchVendor Advisory
- bugs.openldap.org/show_bug.cgi?id=9202 ExploitPatchVendor Advisory
- git.openldap.org/openldap/openldap/-/blob/OPENLDAP_REL_ENG_2_4/… Release NotesVendor Advisory
- git.openldap.org/openldap/openldap/-/commit/98464c11df8247d6a11… PatchVendor Advisory
- www.oracle.com/security-alerts/cpuoct2020.html PatchThird Party Advisory
- www.oracle.com/security-alerts/cpuoct2020.html PatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00016.… Mailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/05/msg00001.html Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 5% percentile: 92 · as of 2 November 2026
- CWE
- CWE-674