FFmpeg 4.0.1 AVI to MPEG4 Conversion Vulnerability

CVE-2018-13305 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:N/A:P

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.

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