漏洞信息
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Vulnerability Title
FFmpeg - Out-of-Bounds Write in RASC Decoder decode_dlta()
Vulnerability Description
FFmpeg's RASC video decoder (decode_dlta in libavcodec/rasc.c) performs 32-bit reads and writes at the row cursor before the NEXT_LINE row-boundary check and validates the DLTA region in pixel rather than byte units, so a DLTA run on a PAL8 frame can access several bytes past the row allocation. A crafted media stream using the RASC FourCC, decoded by libavcodec, triggers a bitstream-controlled out-of-bounds heap write and adjacent out-of-bounds read, leading to memory corruption.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Vulnerability Type
跨界内存写
Vulnerability Title
FFmpeg 缓冲区错误漏洞
Vulnerability Description
FFmpeg是FFmpeg组织开源的一套可录制、转换以及流化音视频的完整解决方案。 FFmpeg存在缓冲区错误漏洞,该漏洞源于RASC视频解码器(libavcodec/rasc.c中的decode_dlta)在NEXT_LINE行边界检查之前执行32位读写操作,并以像素而非字节单位验证DLTA区域,可能导致特制媒体流触发越界堆写入和相邻越界读取,从而导致内存损坏。
CVSS Information
N/A
Vulnerability Type
N/A