CVE-2015-8383

CRITICAL
9.8
CVSS Score
Published: December 2, 2015 at 12:00 AM UTC
Updated: June 17, 2026 at 12:34 AM UTC
3 products affected across 3 vendorsFedoraPHPPerl Compatible Regular Expression Library

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Severity
CRITICAL9.8
Exploit prediction
EPSS 6%

Description

PCRE before 8.38 mishandles certain repeated conditional groups, 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PHP· PHPdrupal
95%
5.5.0 ≤ v < 5.5.325.6.0 ≤ v < 5.6.187.0.0 ≤ v < 7.0.3
Affected range stops below 5.5.32, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.6.18, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.0.3, so it looks safe — our inference, not a vendor statement

References (9)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2750.html
x_refsource_CONFIRMBroken LinkRelease Notes
http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
Mailing Listx_refsource_MLISTThird Party Advisory
http://www.openwall.com/lists/oss-security/2015/11/29/1
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2016:1132
x_refsource_CONFIRMThird Party Advisory
https://bto.bluecoat.com/security-advisory/sa128
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
https://security.gentoo.org/glsa/201607-02

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119

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