CVE-2009-3767
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'…
- 4.3MediumCVSS base score
- 3.3%Exploitation in 30 daysEPSS · top 11% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 3.3% · top 11% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
n/a
- affected n/a
References
16
- FEDORA-2010-0752 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [oss-security] 20090923 Re: More CVE-2009-2408 like issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- GLSA-201406-36 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- oval:org.mitre.oval:def:11178 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- ADV-2010-1858 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 40677 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:7274 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- http://www.openldap.org/devel/cvsweb.cgi/libraries/libldap/tls_o.c.diff?r1=1.8&r2=1.11&f=h (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-3056 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- RHSA-2010:0543 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2011:0896 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- SUSE-SR:2009:016 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 38769 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- APPLE-SA-2009-11-09-1 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- http://support.apple.com/kb/HT3937 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20090903 More CVE-2009-2408 like issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-3739 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-3767)Record last updated .