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CVS Buffer Overflow and Denial of Service Vulnerabilities
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Secunia Advisory:
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SA14976
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Release Date:
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2005-04-19
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Last Update:
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2005-04-26
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Popularity:
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11,701 views
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Critical:
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Moderately critical
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Impact:
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Unknown
DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Concurrent Versions System (CVS) 1.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2005-0753
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Description:
Multiple vulnerabilities have been reported in CVS, where one has an unknown impact and others which can be exploited by malicious people to cause a DoS (Denial of Service) and compromise a vulnerable system.
1) A boundary error in the CVS client during processing of version and author information can be exploited to cause a buffer overflow and execute arbitrary code by tricking a user into connecting to a malicious CVS server.
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
Changelog:
2005-04-26: Added information about first vulnerability.
Original Advisory:
https://ccvs.cvshome.org/source/brows...amp;content-type=text/x-cvsweb-markup
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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