漏洞信息
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Vulnerability Title
libheif has a Heap OOB Read/SEGV Crash via Zero samples_per_chunk
Vulnerability Description
libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 792-byte HEIF sequence file with samples_per_chunk=0 in the stsc box causes an unsigned integer underflow in the Chunk constructor (m_last_sample = 0 + 0 - 1 = UINT32_MAX), mapping all samples to an empty chunk and resulting in a denial of service. When any sample is accessed, the library reads from index 0 of an empty std::vector, causing a guaranteed SEGV (null-page read). The file parses successfully without producing an error; the crash occurs on the first frame access. This issue has been fixed in version 1.22.0.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Vulnerability Type
跨界内存读
Vulnerability Title
libheif 缓冲区错误漏洞
Vulnerability Description
libheif是struktur开源的一款 ISO/IEC 23008-12:2017 HEIF 文件格式解码器和编码器。 libheif 1.21.2及之前版本存在缓冲区错误漏洞,该漏洞源于stsc box中samples_per_chunk=0导致无符号整数下溢,映射所有样本到空块,访问时触发段错误,造成拒绝服务。
CVSS Information
N/A
Vulnerability Type
N/A