Date: Wed, 05 Mar 2008 09:42:59 +0100 From: Matthieu Herrb <matthieu.herrb@...s.fr> To: oss-security@...ts.openwall.com Subject: Re: request CVE id: insecure handling of DISPLAY in rxvt Nico Golde wrote: > Hi all, > Steve, can I get a CVE id for the following issue in rxvt? > > "If the DISPLAY environment is not set, rxvt opens an xterm > on :0, which on some headless login-server means anyone can setup > an fake X server waiting for someone loggin in without X > forwarding to start rxvt by some mistake or by some program (thus > without even noticing) and getting full shell access to that other > account." > > This is Debian bug 469296. > > It should be a good idea to check other terminal emulators > as well. > >  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=469296 > I don't understand how that's an issue with rxvt. If you "fix" the terminal emulator not to that, yo can still run rxvt -display :0 or env DISPLAY=:0 rxvt. But then I also don't understant what you mean by "setup an fake X server waiting for someone loggin in..." Could you describe the attack scenario in a bit more details? -- Matthieu Herrb Download attachment "smime.p7s" of type "application/x-pkcs7-signature" (4033 bytes)
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