CVE-2015-2327

critical

Description

PCRE before 8.36 mishandles the /(((a\2)|(a*)\g<-1>))*/ pattern and related patterns with certain internal recursive back references, which allows remote attackers to cause a denial of service (segmentation fault) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

References

https://jira.mongodb.org/browse/SERVER-17252

http://www.securityfocus.com/bid/74924

http://www.openwall.com/lists/oss-security/2015/11/29/1

http://www.fortiguard.com/advisory/FG-VD-15-010/

http://rhn.redhat.com/errata/RHSA-2016-2750.html

Details

Source: Mitre, NVD

Published: 2015-12-02

Updated: 2025-04-12

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 10

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.03731