CVE-2015-2326

medium

Description

The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service (out-of-bounds read) via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by "((?+1)(\1))/".

References

http://lists.opensuse.org/opensuse-updates/2015-05/msg00014.html

https://bugs.exim.org/show_bug.cgi?id=1592

https://fortiguard.com/zeroday/FG-VD-15-016

https://www.pcre.org/original/changelog.txt

Details

Source: MITRE

Published: 2020-01-14

Updated: 2020-01-24

Type: CWE-125

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM