PCRE before 8.36 mishandles the /(((a\2)|(a*)\g<-1>))*/ pattern and related patterns...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.openwall.com/lists/oss-security/2015/11/29/1
- http://www.fortiguard.com/advisory/FG-VD-15-010/
- http://www.securityfocus.com/bid/74924
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- https://bugs.exim.org/show_bug.cgi?id=1503
- https://jira.mongodb.org/browse/SERVER-17252
- http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
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CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.