漏洞信息
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Vulnerability Title
FFmpeg 8.1.2 Out-of-Bounds Write via TY Demuxer and Shorten Decoder
Vulnerability Description
FFmpeg through 8.1.2 contains an out-of-bounds write vulnerability that allows attackers to cause heap corruption by supplying a crafted ffconcat file processed with the -safe 0 flag. The TY demuxer's demux_audio() function decrements packet size without bounds checking, producing a negative size value that is passed to memcpy() in shorten_decode_frame(), where conversion to size_t wraps the value to near SIZE_MAX and triggers reads beyond the source allocation and writes far beyond the Shorten decoder's bitstream buffer.
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability Type
跨界内存写
Vulnerability Title
FFmpeg 数字错误漏洞
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 8.1.2及之前版本存在安全漏洞,该漏洞源于TY demuxer的demux_audio()函数在减少数据包大小时未进行边界检查,产生负大小值,传递给shorten_decode_frame()中的memcpy()后转换为接近SIZE_MAX,导致越界读取和写入,攻击者可通过提供特制的ffconcat文件并处理-safe 0标志造成堆损坏。
CVSS Information
N/A
Vulnerability Type
N/A