Bug 1285399 - (CVE-2015-2328) CVE-2015-2328 pcre: infinite recursion compiling pattern with recursive reference in a group with indefinite repeat (8.36/20)
CVE-2015-2328 pcre: infinite recursion compiling pattern with recursive refer...
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20140807,repor...
: Reopened, Security
Depends On: 1128577 1285401 1330508 1330509
Blocks: 1285420
  Show dependency treegraph
 
Reported: 2015-11-25 09:23 EST by Adam Mariš
Modified: 2016-11-15 08:32 EST (History)
36 users (show)

See Also:
Fixed In Version: pcre 8.36
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2016-05-11 09:46:33 EDT
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CRM:
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Description Adam Mariš 2015-11-25 09:23:41 EST
A stack-based buffer overflow vulnerability was found in compile_regex(), triggered via crafted regular expression.

Upstream bug (contains reproducer):

https://bugs.exim.org/show_bug.cgi?id=1515

Upstream patch:

http://vcs.pcre.org/pcre?view=revision&revision=1498

CVE request:

http://www.openwall.com/lists/oss-security/2015/05/31/4
Comment 1 Adam Mariš 2015-11-25 09:25:21 EST
Created pcre tracking bugs for this issue:

Affects: fedora-all [bug 1285401]
Comment 2 Petr Pisar 2015-11-25 11:11:20 EST
Upstream fixed it in 8.36. Simple reproducer is crash when compiling /((?(R)a|(?1)))*/ expression.
Comment 3 Petr Pisar 2015-11-25 11:17:40 EST
This has already been fixed as bug #1128577 in Fedora. No supported Fedora is affected since 2014-08-11.
Comment 4 Tomas Hoger 2016-02-17 16:45:08 EST
This is not a stack based buffer overflow, but stack overflow, caused by infinite recursion.  The impact of this issue is limited to crash.

The problem was introduced upstream between version 8.12 and 8.13.
Comment 6 errata-xmlrpc 2016-05-11 09:07:32 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:1025 https://rhn.redhat.com/errata/RHSA-2016-1025.html
Comment 7 errata-xmlrpc 2016-11-15 06:47:11 EST
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS

Via RHSA-2016:2750 https://rhn.redhat.com/errata/RHSA-2016-2750.html

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