Vulnerability Details CVE-2015-3217
PCRE 7.8 and 8.32 through 8.37, and PCRE2 10.10 mishandle group empty matches, which might allow remote attackers to cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by /^(?:(?(1)\\.|([^\\\\W_])?)+)+$/.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.029
EPSS Ranking 85.7%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- http://rhn.redhat.com/errata/RHSA-2016-1025.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://vcs.pcre.org/pcre?view=revision&revision=1566
- http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
- http://www.openwall.com/lists/oss-security/2015/06/03/7
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/75018
- https://access.redhat.com/errata/RHSA-2016:1132
- https://bugs.exim.org/show_bug.cgi?id=1638
- https://bugzilla.redhat.com/show_bug.cgi?id=1228283
- http://rhn.redhat.com/errata/RHSA-2016-1025.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://vcs.pcre.org/pcre?view=revision&revision=1566
- http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
- http://www.openwall.com/lists/oss-security/2015/06/03/7
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/75018
- https://access.redhat.com/errata/RHSA-2016:1132
- https://bugs.exim.org/show_bug.cgi?id=1638
- https://bugzilla.redhat.com/show_bug.cgi?id=1228283
Products affected by CVE-2015-3217
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cpe:2.3:a:ibm:powerkvm:2.1
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cpe:2.3:a:ibm:powerkvm:3.1
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cpe:2.3:a:pcre:pcre2:10.10
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cpe:2.3:a:pcre:pcre:7.8
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cpe:2.3:a:pcre:pcre:8.32
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cpe:2.3:a:pcre:pcre:8.33
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cpe:2.3:a:pcre:pcre:8.34
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cpe:2.3:a:pcre:pcre:8.35
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cpe:2.3:a:pcre:pcre:8.36
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cpe:2.3:a:pcre:pcre:8.37