CVE-2017-6004
First published: Thu Feb 16 2017(Updated: )
The compile_bracket_matchingpath function in pcre_jit_compile.c in PCRE through 8.x before revision 1680 (e.g., the PHP 7.1.1 bundled version) allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted regular expression.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/pcre | <8.41 | 8.41 |
| PCRE (Perl Compatible Regular Expressions) | <=8.38 |
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Reference Links
- http://www.securityfocus.com/bid/96295
- http://www.securitytracker.com/id/1037850
- https://access.redhat.com/errata/RHSA-2018:2486
- https://bugs.exim.org/show_bug.cgi?id=2035
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
- https://security.gentoo.org/glsa/201706-11
- https://vcs.pcre.org/pcre/code/trunk/pcre_jit_compile.c?r1=1676&r2=1680&view=patch
- https://vcs.pcre.org/pcre?view=revision&revision=1680
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1425394
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1425392
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1425396
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1425393
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1425391
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1425395
- https://bugzilla.redhat.com/show_bug.cgi?id=1425365
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Frequently Asked Questions
What is the severity of CVE-2017-6004?
CVE-2017-6004 is classified as a high severity vulnerability due to its potential for causing denial of service.
How do I fix CVE-2017-6004?
To fix CVE-2017-6004, you should upgrade to PCRE versions 8.41 or above.
What types of attacks does CVE-2017-6004 enable?
CVE-2017-6004 enables remote attackers to cause a denial of service through crafted regular expressions.
Which versions of PCRE are affected by CVE-2017-6004?
CVE-2017-6004 affects PCRE versions before 8.41 and versions 8.x before revision 1680.
What are the consequences of exploiting CVE-2017-6004?
Exploiting CVE-2017-6004 can lead to out-of-bounds reads and application crashes.
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- alias/CVE-2017-6004
- agent/software-canonical-lookup
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- source/MITRE
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- package-manager/redhat
- vendor/pcre
- canonical/pcre (perl compatible regular expressions)
- version/pcre (perl compatible regular expressions)/8.38