Date: Thu, 27 Mar 2008 18:54:07 -0400 (EDT) From: "Steven M. Christey" <coley@...us.mitre.org> To: oss-security@...ts.openwall.com Subject: Re: was: SA29489 CenterIM URL handling flaw On Tue, 25 Mar 2008, Nico Golde wrote: > Hi, > * Nico Golde <oss-security+ml@...lde.de> [2008-03-25 16:25]: > > * Lubomir Kundrak <lkundrak@...hat.com> [2008-03-24 15:08]: > > > Ad SA29489  "CenterIM URL Parsing Command Execution Vulnerability" > > > > > > CenterIM does completely nothing with received URLs. Maybe the > > > unfortuate "exploit writer" was using XFCE Terminal , or a terminal > > > emulator with a similar problem. > > > > That's partly true. While centerim has no special URL > > handler to handle incoming urls it does provide the ability > > to list urls in a message by pressing F2. If you press enter > > on one of these urls it tries to open it in an external > > browser and executes the other commands as well. This is the kind of situation that CVE adopted the "user-assisted" term for: the user assists the attacker in his/her own demise. > > You see the commands in the URL however so I think the > > impact of this is like sending someone a message with > > "please type rm -rf ~ in your shell" so the secunia rating > > is a bit beyond the actual impact. Is the URL still encoded at the time it is viewed? if so, then I don't expect a typical user to notice this equivalent of "rm -rf *": %72%6D%20%2D%72%66%20%2A and that's part of the "smell test" for user-assisted issues. Current CVE desc below. - Steve ====================================================== Name: CVE-2008-1467 Status: Candidate URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1467 Reference: MILW0RM:5283 Reference: URL:http://www.milw0rm.com/exploits/5283 Reference: BID:28362 Reference: URL:http://www.securityfocus.com/bid/28362 Reference: FRSIRT:ADV-2008-0956 Reference: URL:http://www.frsirt.com/english/advisories/2008/0956/references Reference: SECUNIA:29489 Reference: URL:http://secunia.com/advisories/29489 ** DISPUTED ** CenterIM 4.22.3 and earlier allows user-assisted remote attackers to execute arbitrary commands via shell metacharacters in a URI, related to "received URLs in the message window." NOTE: this issue has been disputed due to the user-assisted nature, since the URL must be selected and launched by the victim.
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