2020-18775 | libav vc1_block.c vc1_decode_b_mb_intfi denial of service
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A vulnerability was found in libav 12.3 (Multimedia Player Software) and classified as problematic. Affected by this issue is the function
vc1_decode_b_mb_intfi of the file vc1_block.c. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. Impacted is availability. CVE summarizes:
In Libav 12.3, there is a heap-based buffer over-read in vc1_decode_b_mb_intfi in vc1_block.c that allows an attacker to cause denial-of-service via a crafted file.
The weakness was shared 08/24/2021. The advisory is shared for download at bugzilla.libav.org. This vulnerability is handled as CVE-2020-18775 since 08/13/2020. The attack can only be done within the local network. The successful exploitation needs a simple authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5
Status: Not defined
0-Day Time: 🔒
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