GEN:SID | 1:2009 |
Message | MISC CVS invalid repository response |
Summary | CVS is the Concurrent Versions System, commonly used to help manage software development.
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Impact | This may be an intelligence gathering activity or an attempt to connect to a CVS repository containing code not publicly available.
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Detailed Information | This rule detects attempts to connect to a CVS repository that fail due indicate determined activity by an attacker to gain unauthorized access to the CVS respository.
The source code of software in the repository may be compromised by a succesful attacker who could gain access to source code not intended for public viewing.
For CVS daemons running under changed root conditions (chroot), the rest of the operating system files may be protected.
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Affected Systems | All versions of CVS |
Attack Scenarios | This may be an intelligence gathering activity or an attempt to log in to a CVS repository that is not intended to be publicly available.
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Ease of Attack | Simple.
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Corrective Action | Disable the CVS daemon in the file /etc/inetd.conf. Run the CVS daemon as a user other than root that does not have a valid login to the machine.
Disable anonymous access to the cvs server where appropriate.
Maintain checks on the password database and the CVS repository logs.
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Additional References | CVS: http://www.cvshome.org/docs/
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