Unvalidated Child Frame Length in libwebm Allows Information Leak and Denial of Service

CVE-2018-6406 · MEDIUM Severity

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

The function ParseVP9SuperFrameIndex in common/libwebm_util.cc in libwebm through 2018-01-30 does not validate the child_frame_length data obtained from a .webm file, which allows remote attackers to cause an information leak or a denial of service (heap-based buffer over-read and later out-of-bounds write), or possibly have unspecified other impact.

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