Vulnerability Description
Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote attackers to cause a denial of service (slapd crash) via a zero-length string that triggers a heap-based buffer overflow, as demonstrated using an empty postalAddressAttribute value in an LDIF entry.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openldap | Openldap | <= 2.4.26 |
Related Weaknesses (CWE)
References
- http://secunia.com/advisories/46599Vendor Advisory
- http://security.gentoo.org/glsa/glsa-201406-36.xml
- http://www.openldap.org/devel/gitweb.cgi?p=openldap.git%3Ba=commitdiff%3Bh=50723
- http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7059%3Bselectid=7059
- http://www.openwall.com/lists/oss-security/2011/10/26/5
- http://www.openwall.com/lists/oss-security/2011/10/26/9
- http://www.securityfocus.com/bid/50384
- http://www.ubuntu.com/usn/USN-1266-1
- https://bugzilla.redhat.com/show_bug.cgi?id=749324Patch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/70991
- http://secunia.com/advisories/46599Vendor Advisory
- http://security.gentoo.org/glsa/glsa-201406-36.xml
- http://www.openldap.org/devel/gitweb.cgi?p=openldap.git%3Ba=commitdiff%3Bh=50723
- http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7059%3Bselectid=7059
- http://www.openwall.com/lists/oss-security/2011/10/26/5
FAQ
What is CVE-2011-4079?
CVE-2011-4079 is a vulnerability with a CVSS score of 4.0 (MEDIUM). Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote attackers to cause a denial of service (slapd crash) via a zero-length string that triggers a heap-bas...
How severe is CVE-2011-4079?
CVE-2011-4079 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-4079?
Check the references section above for vendor advisories and patch information. Affected products include: Openldap Openldap.