Bug 429025 - (CVE-2007-4771) CVE-2007-4771 libicu incomplete interval handling
CVE-2007-4771 libicu incomplete interval handling
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity high
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Assigned To: Red Hat Product Security
impact=important,source=vendorsec,rep...
: Reopened, Security
Depends On: 429706 429707 430232 430233
Blocks:
  Show dependency treegraph
 
Reported: 2008-01-16 16:08 EST by Josh Bressers
Modified: 2008-01-29 07:31 EST (History)
3 users (show)

See Also:
Fixed In Version: 3.8-5.fc8
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2008-01-28 09:06:56 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Josh Bressers 2008-01-16 16:08:57 EST
Will Drewry reported a flaw in the way libicu processes certain regular
expressions.  He reports:

    In the function doInterval, regexcmp.cpp:976, there isno check to ensure
    than the upper interval is not -1.  This is intentional as unbounded upper
    limits are allowed, however the remainder of the code does not gracefully
    handle this case.  For instance, a heap overflow is possible due to the
    doubling of memory as RegexMatcher::StateSave continues to backtrack.
Comment 7 Fedora Update System 2008-01-27 02:13:11 EST
icu-3.8-5.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2008-01-27 02:21:21 EST
icu-3.6-20.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Red Hat Product Security 2008-01-27 05:15:25 EST
This issue was addressed in:

Red Hat Enterprise Linux:
  http://rhn.redhat.com/errata/RHSA-2008-0090.html

Fedora:
  https://admin.fedoraproject.org/updates/F7/FEDORA-2008-1076
  https://admin.fedoraproject.org/updates/F8/FEDORA-2008-1036

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