CVE-2021-46823: Denial of Service in python-ldap

June 19, 2022 (updated June 20, 2022)

python-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitions, because of a regular expression denial of service (ReDoS) flaw in the LDAP schema parser. By sending crafted regex input, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.

References

exchange.xforce.ibmcloud.com/vulnerabilities/221507
github.com/advisories/GHSA-qfr5-wjpw-q4c4
github.com/python-ldap/python-ldap/security/advisories/GHSA-r8wq-qrxc-hmcm
nvd.nist.gov/vuln/detail/CVE-2021-46823

Detect and mitigate CVE-2021-46823 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →