CVE-2012-2686 Denial of service in n/a
Remote attackers can crash applications using OpenSSL's AES-NI TLS implementation by sending crafted CBC data, causing a 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-2012-2686?
CVE-2012-2686 is a medium-severity denial of service vulnerability in Openssl Openssl, published on 8 Feb 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and 1.2 implementations in OpenSSL 1.0.1 before 1.0.1d allows remote attackers to cause a denial of service (application crash) via crafted CBC data.
Weakness: CWE-310
Which versions are affected by CVE-2012-2686?
It affects 1 product.
Products include Openssl Openssl.
How do I fix CVE-2012-2686?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2012-2686 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-2686 exists.
Public exploit code: 1 Metasploit module.
Other vulnerabilities in Openssl Openssl
Sources
Also known as DEBIAN-CVE-2012-2686, GHSA-5r46-h84j-rjp5.