CVE-2015-2327
pcre: infinite recursion compiling pattern with zero-repeated groups that include recursive back reference (8.36/19)
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · July 11, 2014
Updated · August 5, 2026
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.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 4.3AV:N/AC:M/Au:N/C:N/I:N/A:P
CWE-674 · Uncontrolled Recursion