CVE-2007-1661

CVE-2007-1661 · MEDIUM Severity

AV:N/AC:L/AU:N/C:P/I:N/A:P

Perl-Compatible Regular Expression (PCRE) library before 7.3 backtracks too far when matching certain input bytes against some regex patterns in non-UTF-8 mode, which allows context-dependent attackers to obtain sensitive information or cause a denial of service (crash), as demonstrated by the "\X?\d" and "\P{L}?\d" patterns.

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