gstreamer MKV Demuxing matroskademux heap-based overflow

Summaryinfo

A vulnerability described as critical has been identified in gstreamer. Impacted is an unknown function of the component MKV Demuxing. The manipulation of the argument matroskademux results in heap-based overflow. This vulnerability is cataloged as CVE-2022-1923. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in gstreamer (Multimedia Processing Software) (unknown version). It has been classified as critical. Affected is an unknown code block of the component MKV Demuxing. The manipulation of the argument matroskademux with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

DOS / potential heap overwrite in mkv demuxing using bzip decompression. Integer overflow in matroskademux element in bzip decompression function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite. If the libc uses mmap for large chunks, and the OS supports mmap, then it is just a segfault (because the realloc before the integer overflow will use mremap to reduce the size of the chunk, and it will start to write to unmapped memory). However, if using a libc implementation that does not use mmap, or if the OS does not support mmap while using libc, then this could result in a heap overwrite.

The weakness was shared 07/20/2022 as 1225. The advisory is available at gitlab.freedesktop.org. This vulnerability is traded as CVE-2022-1923 since 05/27/2022. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/17/2026).

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Multimedia Processing Software

Name

• gstreamer

License

• open-source

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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