What’s Vulnerable › Vulnerabilities

CVE-2016-1283

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2016-01-03 · updated 2026-06-17
• Weakness: CWE-119

Description

The pcre_compile2 function in pcre_compile.c in PCRE 8.38 mishandles the /((?:F?+(?:^(?(R)a+\"){99}-))(?J)(?'R'(?'R'<((?'RR'(?'R'\){97)?J)?J)(?'R'(?'R'\){99|(:(?|(?'R')(\k'R')|((?'R')))H'R'R)(H'R))))))/ pattern and related patterns with named subgroups, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

Affected products

• Fedoraproject Fedora: 22, 23
• Oracle Corporation Solaris Operating System: 11.3
• Pcre: 8.38
• PHP: from 5.6.0 before 5.6.32; from 7.0.0 before 7.0.25; from 7.1.0 before 7.1.11 — fixed in 5.6.32, 7.0.25, 7.1.11

How to fix

Upgrade to a fixed version: PHP 5.6.32, 7.0.25, 7.1.11. Check the vendor advisory for mitigations.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178193.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178955.html
• http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
• http://www.securityfocus.com/bid/79825
• http://www.securitytracker.com/id/1034555
• http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.343110
• https://access.redhat.com/errata/RHSA-2016:1132
• https://bto.bluecoat.com/security-advisory/sa128
• https://bugs.exim.org/show_bug.cgi?id=1767
• https://security.gentoo.org/glsa/201607-02
• https://www.tenable.com/security/tns-2016-18
• https://www.tenable.com/security/tns-2017-14

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