What’s Vulnerable › Vulnerabilities

CVE-2015-3217

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2016-12-13 · updated 2026-06-17
• Weakness: CWE-119

Description

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_])?)+)+$/.

Affected products

• IBM Powerkvm: 2.1, 3.1
• Pcre: 7.8, 8.32, 8.33, 8.34, 8.35, 8.36 (+1)
• PCRE2: 10.10

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

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