CVE-2011-4109 Memory corruption in n/a
Remote attackers can trigger a double free in OpenSSL when policy checks are enabled, potentially causing denial of service or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-4109?
CVE-2011-4109 is a critical memory corruption vulnerability in Openssl Openssl, published on 6 Jan 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Double free vulnerability in OpenSSL 0.9.8 before 0.9.8s, when X509_V_FLAG_POLICY_CHECK is enabled, allows remote attackers to have an unspecified impact by triggering failure of a policy check.
Weakness: CWE-399
Which versions are affected by CVE-2011-4109?
It affects 1 product.
Products include Openssl Openssl.
How do I fix CVE-2011-4109?
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-2011-4109 being exploited?
There is no known exploitation of CVE-2011-4109 in the wild and no public exploit code.
Other vulnerabilities in Openssl Openssl
Sources
Also known as DEBIAN-CVE-2011-4109, GHSA-fr6r-xw3f-g957.