漏洞信息
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Vulnerability Title
Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expression matching via an undersized superlinear cache in S_regmatch
Vulnerability Description
Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expression matching via an undersized superlinear cache in S_regmatch.
The regex engine's superlinear cache holds one bit per subject position for each participating WHILEM node, so the bit count is the subject length plus one times the number of nodes. Nothing checks that product for positive overflow of the signed 32-bit count: a 286331153 byte subject matched against a pattern with 15 participating nodes stores the count as 14, leaving a two byte cache. The cache is then indexed from the real match position and node number, so reads go past the end of the allocation, and on failure CACHEsayNO sets a bit past it.
A caller that matches an attacker controlled subject of this size against a pattern of this shape can crash the process or corrupt heap memory.
CVSS Information
N/A
Vulnerability Type
整数溢出或超界折返
Vulnerability Title
perl 缓冲区错误漏洞
Vulnerability Description
Perl是Perl组织开源的一款通用、解释型、动态的跨平台编程语言。 perl 5.45.1及之前版本存在安全漏洞,该漏洞源于S_regmatch中正则表达式匹配期间超线性缓存不足,导致越界堆读取和写入,可能导致进程崩溃或堆内存损坏。
CVSS Information
N/A
Vulnerability Type
N/A