CVE-2015-3308 Use after free in n/a

What is CVE-2015-3308?

CVE-2015-3308 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 2 Sep 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Double free vulnerability in lib/x509/x509_ext.c in GnuTLS before 3.3.14 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted CRL distribution point.

Which versions are affected by CVE-2015-3308?

It affects 2 products.

Products include Canonical Ubuntu Linux, Gnu Gnutls.

How do I fix CVE-2015-3308?

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-2015-3308 being exploited?

There is no known exploitation of CVE-2015-3308 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2015-3308, GHSA-f5vv-qq78-r728.