CVE-2017-5334 Use after free in n/a
Remote attackers can trigger a double free via crafted X.509 certificates, potentially causing crashes or arbitrary code execution in applications using GnuTLS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-5334?
CVE-2017-5334 is a critical use after free vulnerability in Gnu Gnutls, published on 24 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified impact via crafted policy language information in an X.509 certificate with a Proxy Certificate Information extension.
Weakness: CWE-415
Which versions are affected by CVE-2017-5334?
It affects 2 products.
Products include Gnu Gnutls, Opensuse Leap.
How do I fix CVE-2017-5334?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2017-5334 being exploited?
There is no known exploitation of CVE-2017-5334 in the wild and no public exploit code.
Other vulnerabilities in Gnu Gnutls
Sources
Also known as DEBIAN-CVE-2017-5334, GHSA-xwcr-3xw9-7333, UBUNTU-CVE-2017-5334.