Home/CVE/PCRE before 8.38 mishandles the interaction of lookbehind assertions and mutually recursive subpatterns, which allows re
CVE

CVE-2015-8386

PCRE before 8.38 mishandles the interaction of lookbehind assertions and mutually recursive subpatterns, which allows re

PCRE before 8.38 mishandles the interaction of lookbehind assertions and mutually recursive subpatterns, which allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

CRITICAL · CVSS 9.8 EPSS 0.0752
Schedule remediation
  • EPSS percentile: top 8% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
▤

Affected Products & Versions

6
pcre perl compatible regular expression library<= 8.37
fedoraproject fedoraall versions
oracle linuxall versions
php>= 5.5.0 and < 5.5.32
php>= 5.6.0 and < 5.6.18
php>= 7.0.0 and < 7.0.3
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productcriticalLinux Reverse Shell Indicator
producthighCommunication To LocaltoNet Tunneling Service Initiated - Linux
producthighPotentially Suspicious Malware Callback Communication - Linux
producthighLinux Crypto Mining Pool Connections
producthighCommunication To Ngrok Tunneling Service - Linux
producthighLinux Crypto Mining Indicators
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Dec 2015 · 01:59 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

8
suse-csafSUSE-SU-2017:2699-1
suse-csafSUSE-SU-2017:2700-1
suse-csafSUSE-SU-2016:3161-1
suse-csafSUSE-SU-2016:2971-1
rhsaRHSA-2016:2750Moderate
🔗

References & Sources

12
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174931.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1025.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2750.htmlThird Party Advisory
http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markupBroken LinkRelease Notes
http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/11/29/1Mailing ListThird Party Advisory
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