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Gentoo: CVS double free vulnerability Print E-mail
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Posted by Team   
Gentoo On servers which are configured to allow anonymous read-only access, this bug could be used by anonymous users to gain write privileges.

- - --------------------------------------------------------------------
- - --------------------------------------------------------------------

SUMMARY : arbitrary code execution
DATE    : 2003-01-21 09:43 UTC
EXPLOIT : remote

- - --------------------------------------------------------------------

- From advisory: 

"By sending a malformed directory name it is possible to trigger an 
error condition that will make the function return at a point where a 
global pointer variable is already freed and has not got a new value 
assigned yet. This will result in a classical double-free() when the 
next Directory request is handled. With the help of other CVS requests 
it is possible to either leak some information that could be used to 
determine the heap position or to execute arbitrary code on systems 
that are known to be vulnerable to this kind of bugs."
Read the full advisory at

It is recommended that all Gentoo Linux users who are running
dev-util/cvs upgrade to cvs-1.11.5 as follows:

emerge sync
emerge -u cvs
emerge clean

- - -------------------------------------------------------------------- - GnuPG key is available at
- - --------------------------------------------------------------------

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