Improper Certificate Validation Affecting openldap package, versions <2.4.17-2.1


low

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
NVD
CVSS v3 N/A  medium
Red Hat
CVSS v3 N/A  low

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  • Snyk ID SNYK-DEBIAN10-OPENLDAP-304646
  • published 23 Oct 2009
  • disclosed 23 Oct 2009

How to fix?

Upgrade Debian:10 openldap to version 2.4.17-2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openldap package and not the openldap package as distributed by Debian:10. See How to fix? for Debian:10 relevant fixed versions and status.

libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4, and possibly other versions, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.