CVE-2016-3191
9.8
CRITICAL · CVSS 3.0 · EPSS 8.4% (pctl 95)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
The compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and pcre2_compile.c in PCRE2 before 10.22 mishandles patterns containing an (*ACCEPT) substring in conjunction with nested parentheses, which allows remote attackers to execute arbitrary code or cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror, aka ZDI-CAN-3542.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 8.43% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-119 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2016-03-17 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| pcre | pcre |
| pcre | pcre2 |
References
- http://rhn.redhat.com/errata/RHSA-2016-1025.html
- http://vcs.pcre.org/pcre2?view=revision&revision=489
- http://vcs.pcre.org/pcre?view=revision&revision=1631
- http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/84810
- https://access.redhat.com/errata/RHSA-2016:1132
- https://bto.bluecoat.com/security-advisory/sa128
- https://bugs.debian.org/815920
- https://bugs.debian.org/815921
- https://bugs.exim.org/show_bug.cgi?id=1791
- https://bugzilla.redhat.com/show_bug.cgi?id=1311503
- https://www.tenable.com/security/tns-2016-18
- http://rhn.redhat.com/errata/RHSA-2016-1025.html
- http://vcs.pcre.org/pcre2?view=revision&revision=489
- http://vcs.pcre.org/pcre?view=revision&revision=1631
- http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/84810
- https://access.redhat.com/errata/RHSA-2016:1132
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