CVE-2015-3217: Buffer Overflow
First published: Thu Jun 04 2015(Updated: )
PCRE 7.8 and 8.32 through 8.37, and PCRE2 10.10 mishandle group empty matches, which might allow remote attackers to cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by /^(?:(?(1)\\.|([^\\\\W_])?)+)+$/.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/pcre | <8.38 | 8.38 |
| PCRE2 | =10.10 | |
| PCRE | =7.8 | |
| PCRE | =8.32 | |
| PCRE | =8.33 | |
| PCRE | =8.34 | |
| PCRE | =8.35 | |
| PCRE | =8.36 | |
| PCRE | =8.37 | |
| IBM PowerKVM | =2.1 | |
| IBM PowerKVM | =3.1 |
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Reference Links
- http://rhn.redhat.com/errata/RHSA-2016-1025.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://vcs.pcre.org/pcre?view=revision&revision=1566
- http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
- http://www.openwall.com/lists/oss-security/2015/06/03/7
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/75018
- https://access.redhat.com/errata/RHSA-2016:1132
- https://bugs.exim.org/show_bug.cgi?id=1638
- https://bugzilla.redhat.com/show_bug.cgi?id=1228283
- http://vcs.pcre.org/pcre/code/trunk/pcre_compile.c?r1=1560&r2=1562&pathrev=1562
- http://vcs.pcre.org/pcre/code/trunk/pcre_compile.c?r1=1559&r2=1560&pathrev=1562
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1228283#c0
- https://rhn.redhat.com/errata/RHSA-2016-1025.html
- https://rhn.redhat.com/errata/RHSA-2016-2750.html
Frequently Asked Questions
What is the severity of CVE-2015-3217?
CVE-2015-3217 has a high severity level due to its potential to cause denial of service via stack-based buffer overflow.
How do I fix CVE-2015-3217?
To fix CVE-2015-3217, update to PCRE version 8.38 or later.
Which versions of PCRE are affected by CVE-2015-3217?
CVE-2015-3217 affects PCRE versions 7.8, 8.32 through 8.37, and PCRE2 version 10.10.
Can CVE-2015-3217 be exploited remotely?
Yes, CVE-2015-3217 can be exploited remotely through a crafted regular expression.
What type of issue does CVE-2015-3217 represent?
CVE-2015-3217 represents a stack-based buffer overflow vulnerability.
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