|Date: (C)2007-11-15 (M)2017-10-11|
|CVSS Score: 4.3||Access Vector: NETWORK|
|Exploitability Subscore: 8.6||Access Complexity: MEDIUM|
|Impact Subscore: 2.9||Authentication: NONE|
| ||Confidentiality: NONE|
| ||Integrity: NONE|
| ||Availability: PARTIAL|
Perl-Compatible Regular Expression (PCRE) library before 7.0 does not properly calculate the amount of memory needed for a compiled regular expression pattern when the (1) -x or (2) -i UTF-8 options change within the pattern, which allows context-dependent attackers to cause a denial of service (PCRE or glibc crash) via crafted regular expressions.