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TITLE:
CVS Buffer Overflow and Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA14976

VERIFY ADVISORY:
http://secunia.com/advisories/14976/

CRITICAL:
Moderately critical

IMPACT:
Unknown, DoS, System access

WHERE:
>From remote

SOFTWARE:
Concurrent Versions System (CVS) 1.x
http://secunia.com/product/974/

DESCRIPTION:
Multiple vulnerabilities have been reported in CVS, where one has an
unknown impact and others which potentially can be exploited by
malicious people to cause a DoS (Denial of Service) and compromise a
vulnerable system.

1) An unspecified boundary error can be exploited to cause a buffer
overflow and potentially execute arbitrary code.

2) Some memory leaks and NULL pointer dereferences may be exploited
to cause a DoS.

3) An unspecified error caused due to an arbitrary free has an
unknown impact.

4) Some errors in the contributed Perl scripts can be exploited to
execute arbitrary code via a malicious Perl library.

Successful exploitation requires that the user has commit access and
that one of the contributed Perl scripts has been installed
improperly.

SOLUTION:
Update to version 1.11.20.
https://ccvs.cvshome.org/servlets/ProjectDocumentList

PROVIDED AND/OR DISCOVERED BY:
1-3) Alen Zukich
4) Craig Monson

ORIGINAL ADVISORY:
https://ccvs.cvshome.org/source/browse/ccvs/NEWS?rev=1.116.2.127&content-type=text/x-cvsweb-markup

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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