CVE-2011-4079 Memory corruption in n/a
Remote attackers can crash the OpenLDAP server by sending a zero-length string, causing a heap-based buffer overflow and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-4079?
CVE-2011-4079 is a medium-severity memory corruption vulnerability in Openldap Openldap, published on 27 Oct 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-189
Which versions are affected by CVE-2011-4079?
It affects 1 product.
Products include Openldap Openldap.
How do I fix CVE-2011-4079?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2011-4079 being exploited?
There is no known exploitation of CVE-2011-4079 in the wild and no public exploit code.
Other vulnerabilities in Openldap Openldap
Sources
Also known as DEBIAN-CVE-2011-4079, GHSA-9v33-989g-pj7q.