CVE-2020-12243
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).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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).
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.72% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-674
- Affected
- openldap/openldap · debian/debian linux · opensuse/leap · canonical/ubuntu linux · netapp/cloud backup · netapp/steelstore cloud integrated storage · netapp/h410c firmware · netapp/h300s firmware · netapp/h500s firmware · netapp/h700s firmware · netapp/h300e firmware · netapp/h500e firmware · netapp/h700e firmware · netapp/h410s firmware · broadcom/brocade fabric operating system · apple/mac os x · oracle/zfs storage appliance kit · oracle/solaris
- Source
- cve@mitre.org
EPSS 4.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00016.htmlMailing List, Third Party Advisory
- https://bugs.openldap.org/show_bug.cgi?id=9202Exploit, Patch, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/blob/OPENLDAP_REL_ENG_2_4/CHANGESRelease Notes, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/commit/98464c11df8247d6a11b52e294ba5dd4f0380440Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00001.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200511-0003/Third Party Advisory
- https://support.apple.com/kb/HT211289Third Party Advisory
- https://usn.ubuntu.com/4352-1/Third Party Advisory
- https://usn.ubuntu.com/4352-2/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4666Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.htmlPatch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00016.htmlMailing List, Third Party Advisory
- https://bugs.openldap.org/show_bug.cgi?id=9202Exploit, Patch, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/blob/OPENLDAP_REL_ENG_2_4/CHANGESRelease Notes, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/commit/98464c11df8247d6a11b52e294ba5dd4f0380440Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00001.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200511-0003/Third Party Advisory
- https://support.apple.com/kb/HT211289Third Party Advisory
- https://usn.ubuntu.com/4352-1/Third Party Advisory
- https://usn.ubuntu.com/4352-2/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4666Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.htmlPatch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.