CVE-2009-3767
First published: Fri Oct 23 2009(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple iOS and macOS | <10.6.2 | |
| Fedora | =11 | |
| Red Hat OpenLDAP Servers | <2.4.18 | |
| OpenSSL |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
- http://marc.info/?l=oss-security&m=125198917018936&w=2
- http://marc.info/?l=oss-security&m=125369675820512&w=2
- http://www.openldap.org/devel/cvsweb.cgi/libraries/libldap/tls_o.c.diff?r1=1.8&r2=1.11&f=h
- http://www.vupen.com/english/advisories/2009/3056
- http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
- http://support.apple.com/kb/HT3937
- http://lists.fedoraproject.org/pipermail/package-announce/2010-March/036138.html
- http://secunia.com/advisories/38769
- http://secunia.com/advisories/40677
- http://www.vupen.com/english/advisories/2010/1858
- http://www.redhat.com/support/errata/RHSA-2010-0543.html
- http://www.redhat.com/support/errata/RHSA-2011-0896.html
- http://security.gentoo.org/glsa/glsa-201406-36.xml
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7274
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11178
Frequently Asked Questions
What is the severity of CVE-2009-3767?
The severity of CVE-2009-3767 is classified as medium, allowing for man-in-the-middle attacks due to improper handling of a '\0' character.
How do I fix CVE-2009-3767?
To fix CVE-2009-3767, users should upgrade to OpenLDAP version 2.4.18 or later.
Which software is affected by CVE-2009-3767?
CVE-2009-3767 affects OpenLDAP versions 2.2 and 2.4, as well as certain versions of macOS and Fedora.
What kind of attack does CVE-2009-3767 facilitate?
CVE-2009-3767 facilitates man-in-the-middle attacks allowing attackers to spoof SSL servers.
Is OpenSSL directly vulnerable due to CVE-2009-3767?
No, OpenSSL itself is not directly vulnerable as part of CVE-2009-3767, but it is related to the issue with OpenLDAP.
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/remedy
- agent/last-modified-date
- agent/weakness
- agent/severity
- agent/first-publish-date
- agent/event
- agent/description
- agent/source
- collector/nvd-historical
- agent/software-canonical-lookup-request
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- vendor/apple
- canonical/apple ios and macos
- vendor/fedoraproject
- canonical/fedora
- version/fedora/11
- vendor/openldap
- canonical/red hat openldap servers
- vendor/openssl
- canonical/openssl