CVE-2017-12671 Use after free in n/a
Attackers can cause a denial of service in ImageMagick via an invalid free vulnerability in the PNG coder.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2017-12671?
CVE-2017-12671 is a medium-severity use after free vulnerability in Imagemagick Imagemagick, published on 7 Aug 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
In ImageMagick 7.0.6-3, a missing NULL assignment was found in coders/png.c, leading to an invalid free in the function RelinquishMagickMemory in MagickCore/memory.c, which allows attackers to cause a denial of service.
Weakness: CWE-416
Which versions are affected by CVE-2017-12671?
It affects 1 product.
Products include Imagemagick Imagemagick.
How do I fix CVE-2017-12671?
Apply the vendor's patch.
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-2017-12671 being exploited?
There is no known exploitation of CVE-2017-12671 in the wild and no public exploit code.
Other vulnerabilities in Imagemagick Imagemagick
Sources
Also known as DEBIAN-CVE-2017-12671, GHSA-3g35-2jhp-9xcc.