Perl-Compatible Regular Expression (PCRE) library before 7.3 does not properly compute the length of (1) a \p sequence, (2) a \P sequence, or (3) a \P{x} sequence, which allows context-dependent attackers to cause a denial of service (infinite loop or crash) or execute arbitrary code.
| Software | From | Fixed in |
|---|---|---|
| pcre / pcre | - | 6.1.x |
| pcre / pcre | - | 7.3.x |
| pcre / pcre | - | 6.0.x |