A vulnerability was found in LIBXSMM 1.10. It has been declared as critical. Affected by this vulnerability is the function libxsmm_sparse_csc_reader of the file generator_spgemm_csc_reader.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

There is a heap-based buffer-overflow at generator_spgemm_csc_reader.c (function libxsmm_sparse_csc_reader) in LIBXSMM 1.10, a different vulnerability than CVE-2018-20541 (which is in a different part of the source code and is seen at a different address).

The bug was discovered 11/22/2018. The weakness was shared 12/28/2018 (Website). The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2018-20542 since 12/27/2018. 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 36 days. During that time the estimated underground price was around $0-$5k.

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

The entries 128510 and 128508 are related to this item.

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• LIBXSMM

Version

• 1.10

License

• open-source

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