漏洞信息
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Vulnerability Title
Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk
Vulnerability Description
Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk.
When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error.
A pattern of this shape produces false positive matches (matching strings it should not) and false negative matches (failing to match strings it should). When such a pattern gates an access or filtering decision, the result is wrong.
CVSS Information
N/A
Vulnerability Type
整数溢出或超界折返
Vulnerability Title
SHAY perl 数字错误漏洞
Vulnerability Description
SHAY perl是SHAY的编程语言解释器。 SHAY perl 5.43.9及之前版本存在数字错误漏洞,该漏洞源于在Perl_study_chunk中将超过65535个固定字符串分支编译为trie时,分支计数溢出16位字段导致trie匹配决策表截断,可能产生误报和漏报的正则表达式匹配结果。
CVSS Information
N/A
Vulnerability Type
N/A