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Eggdrop/Windrop 1.6.19 ctcpbuf Remote Crash Vulnerability
========================================================= Eggdrop/Windrop 1.6.19 ctcpbuf Remote Crash Vulnerability ========================================================= eggdrop/windrop remote crash vulnerability * This message: [ Message body ] [ More options ] * Related messages: [ Next message ] [ Previous message ] [ Next in thread ] [ Replies ] From: Thomas Sader <thommey_at_gmail.com> Date: Fri, 15 May 2009 05:54:08 +0200 Affected software ----------------- eggdrop (1.6.19 only, not 1.6.19+ctcpfix) windrop (1.6.19 only, not 1.6.19+ctcpfix) all eggdrop/windrop versions and packages which apply Nico Goldes patch for CVE-2007-2807/SA25276 See: [1] Vulnerability details --------------------- The SA25276 patch ([1]) uses strncpy to fix a buffer overflow vulnerability in src/mod/server.mod/servmsg.c (gotmsg). The last argument is not checked for being non-negative, but that can happen if ctcpbuf is "". That causes a remote crash vulnerability to be exploited by anyone connected to the same IRC network as eggdrop. The SA25276 patch has been applied to the eggdrop1.6.18 debian package and was later adopted by Eggheads into eggdrop1.6.19. One possible exploit anyone can send to the IRC server to crash eggdrop: PRIVMSG eggdrop :\1\1 Resolution ---------- Upgrade to eggdrop/windrop 1.6.19+ctcpfix ([2],[3]), the current cvs versions, or apply the ctcpfix patch at [2] before compiling. Disclosure timeline ------------------- 2009-05-06: Vulnerability discovered and reported to Eggheads. 2009-05-06: Patch committed to cvs. 2009-05-14: New eggdrop and windrop version released with the fix applied. 2009-05-14: Public disclosure. References ---------- [1] http://bugzilla.eggheads.org/show_bug.cgi?id=462 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=427157 http://www.securityfocus.com/bid/24070 http://secunia.com/advisories/25276 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2807 [2] http://www.eggheads.org/downloads/ [3] http://windrop.sourceforge.net/downloads.html --- Thomas Sader (thommey) # 0day.today [2024-12-25] #