ImageMagick up to 7.0.7-29 coders/png.c ReadOneJNGImage null pointer dereference

Summaryinfo

A vulnerability identified as problematic has been detected in ImageMagick up to 7.0.7-29. This affects the function ReadOneJNGImage of the file coders/png.c. This manipulation causes null pointer dereference. The identification of this vulnerability is CVE-2018-16749. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in ImageMagick up to 7.0.7-29 (Image Processing Software). Affected by this vulnerability is the function ReadOneJNGImage of the file coders/png.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

In ImageMagick 7.0.7-29 and earlier, a missing NULL check in ReadOneJNGImage in coders/png.c allows an attacker to cause a denial of service (WriteBlob assertion failure and application exit) via a crafted file.

The bug was discovered 05/02/2018. The weakness was shared 09/09/2018 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2018-16749 since 09/09/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 130 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 117693 (openSUSE Security Update : GraphicsMagick (openSUSE-2018-1045)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171663 (SUSE Enterprise Linux Security Update for GraphicsMagick (SUSE-SU-2018:3269-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117693) and SecurityFocus (BID 105241†). The entries VDB-104397, VDB-123477, VDB-123481 and VDB-123482 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Image Processing Software

Name

• ImageMagick

Version

• 7.0.7-29

License

• open-source

Website

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

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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