VulnerabilityModified
CVE-2020-36221
An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, resulting in denial of service (schema_init.c serialNumberAndIssuerCheck).
HIGH 7.5EPSS 84.2%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 84.2%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, resulting in denial of service (schema_init.c serialNumberAndIssuerCheck).
- 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
- 84.22% probability · 100th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-191
- Affected
- openldap/openldap · debian/debian linux · apple/mac os x · apple/macos
- Source
- cve@mitre.org
References
- http://seclists.org/fulldisclosure/2021/May/64Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/May/65Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/May/70Mailing List, Third Party Advisory
- https://bugs.openldap.org/show_bug.cgi?id=9404Issue Tracking, Vendor Advisory
- https://bugs.openldap.org/show_bug.cgi?id=9424Issue Tracking, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/commit/38ac838e4150c626bbfa0082b7e2cf3a2bb4df31Patch, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/commit/58c1748e81c843c5b6e61648d2a4d1d82b47e842Patch, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57Release Notes, Vendor Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/02/msg00005.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210226-0002/Third Party Advisory
- https://support.apple.com/kb/HT212529Third Party Advisory
- https://support.apple.com/kb/HT212530Third Party Advisory
- https://support.apple.com/kb/HT212531Third Party Advisory
- https://www.debian.org/security/2021/dsa-4845Third Party Advisory
- http://seclists.org/fulldisclosure/2021/May/64Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/May/65Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/May/70Mailing List, Third Party Advisory
- https://bugs.openldap.org/show_bug.cgi?id=9404Issue Tracking, Vendor Advisory
- https://bugs.openldap.org/show_bug.cgi?id=9424Issue Tracking, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/commit/38ac838e4150c626bbfa0082b7e2cf3a2bb4df31Patch, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/commit/58c1748e81c843c5b6e61648d2a4d1d82b47e842Patch, Vendor Advisory
- https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57Release Notes, Vendor Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/02/msg00005.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210226-0002/Third Party Advisory
- https://support.apple.com/kb/HT212529Third Party Advisory
- https://support.apple.com/kb/HT212530Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.