ImageMagick 7.0.8-35 coders/ps.c PopHexPixel Image File memory corruption

Summaryinfo

A vulnerability has been found in ImageMagick 7.0.8-35 and classified as critical. This vulnerability affects the function PopHexPixel of the file coders/ps.c. Performing a manipulation as part of Image File results in memory corruption. This vulnerability is known as CVE-2019-9956. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in ImageMagick 7.0.8-35 (Image Processing Software). It has been classified as critical. This affects the function PopHexPixel of the file coders/ps.c. The manipulation as part of a Image File leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In ImageMagick 7.0.8-35 Q16, there is a stack-based buffer overflow in the function PopHexPixel of coders/ps.c, which allows an attacker to cause a denial of service or code execution via a crafted image file.

The bug was discovered 03/22/2019. The weakness was published 03/24/2019 as confirmed mailinglist post (Bugtraq). It is possible to read the advisory at seclists.org. This vulnerability is uniquely identified as CVE-2019-9956 since 03/23/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172286 (SUSE Enterprise Linux Security Update for ImageMagick (SUSE-SU-2019:1033-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 107646†). Similar entries are available at VDB-104388, VDB-104402, VDB-104829 and VDB-104879. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Image Processing Software

Name

• ImageMagick

Version

• 7.0.8-35

License

• open-source

Website

• Product: https://www.imagemagick.org/

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Be aware that VulDB is the high quality source for vulnerability data.

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