Home/CVE/PCRE before 8.38 mishandles the /(?:|a|){100}x/ pattern and related patterns, which allows remote attackers to cause a d
CVE

CVE-2015-8389

PCRE before 8.38 mishandles the /(?:|a|){100}x/ pattern and related patterns, which allows remote attackers to cause a d

PCRE before 8.38 mishandles the /(?:|a|){100}x/ pattern and related patterns, which allows remote attackers to cause a denial of service (infinite recursion) 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 0.02653
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-185Incorrect Regular Expression
▤

Affected Products & Versions

5
pcre perl compatible regular expression library<= 8.37
fedoraproject fedoraall 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
▣

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

5
suse-csafSUSE-SU-2017:2699-1
suse-csafSUSE-SU-2017:2700-1
suse-csafSUSE-SU-2016:3161-1
suse-csafSUSE-SU-2016:2971-1
usnUSN-2943-1
🔗

References & Sources

8
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://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markupRelease NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2015/11/29/1Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/82990Third Party AdvisoryVDB Entry
https://bto.bluecoat.com/security-advisory/sa128Permissions RequiredThird Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731Third Party Advisory
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