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Gentoo: 200301-2 Critical: Leafnode NNTPD Denial Of Service

This vulnerability can make leafnode's nntpd server, named leafnode, go into an unterminated loop when a particular article is requested.. - -------------------------------------------------------------------- GENTOO LINUX SECURITY ANNOUNCEMENT 200301-2 - -------------------------------------------------------------------- PACKAGE : leafnode SUMMARY : denial of service DATE : 2003-01-02 11:01 UTC EXPLOIT : local and remote - -------------------------------------------------------------------- From leafnode advisory: "This vulnerability can make leafnode's nntpd server, named leafnode, go into an unterminated loop when a particular article is requested. The connection becomes irresponsive, and the server hogs the CPU. The client will have to terminate the connection and connect again, and may fall prey to the same problem; ultimately, there may be so many leafnode processes hogging the CPU that no serious work is possible any more and the super user has to kill all running leafnode processes." Read the full advisory at http://marc.theaimsgroup.com/?l=bugtraq&m=104127108823436&w=2 SOLUTION It is recommended that all Gentoo Linux users who are running new-news/leafnode-1.9.24 or earlier update their systems as follows: emerge rsync emerge leafnode emerge clean - -------------------------------------------------------------------- This email address is being protected from spambots. You need JavaScript enabled to view it. - GnuPG key is available at - -------------------------------------------------------------------- . A congestion problem in the branch-node element of Gentoo can cause nntpd server downtimes, leading to unresponsive connections and increased CPU usage.. Gentoo Security, Leafnode Denial, NNTP Exploit, Server Management, Process Overload. . Severity: Critical. LinuxSecurity.com Team

Jan 02, 2003 •Critical Gentoo