CVE-2009-3767
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Description
The CVE Program describes this issue as:
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.
Statement
This issue was addressed in the openldap packages as shipped with Red Hat Enterprise Linux 5 and 4 via: https://rhn.redhat.com/errata/RHSA-2010-0198.html and https://rhn.redhat.com/errata/RHSA-2010-0543.html respectively.
The Red Hat Security Response Team has rated this issue as having moderate security impact, a future openldap update may address this flaw in Red Hat Enterprise Linux 3.
Additional information
- Bugzilla 530715: OpenLDAP: Doesn't properly handle NULL character in subject Common Name
- FAQ: Frequently asked questions about CVE-2009-3767
Common Vulnerability Scoring System (CVSS) Score Details
Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
Red Hat | NVD | |
---|---|---|
CVSS v2 Base Score | 2.6 | 4.3 |
Attack Vector | Network | Network |
Access Complexity | High | Medium |
Authentication | None | None |
Confidentiality Impact | None | None |
Integrity Impact | Partial | Partial |
Availability Impact | None | None |
CVSS v2 Vector
Red Hat: AV:N/AC:H/Au:N/C:N/I:P/A:N
NVD: AV:N/AC:M/Au:N/C:N/I:P/A:N
Frequently Asked Questions
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