Bugtraq mailing list archives
Re: Glibc Local Root Exploit
From: Joe <joe () blarg net>
Date: Wed, 10 Jan 2001 13:36:24 -0800
On Wed, 10 Jan 2001, Charles Stevenson wrote:
Hi all, This has been bouncing around on vuln-dev and the debian-devel lists. It effects glibc >= 2.1.9x and it would seem many if not all OSes using these versions of glibc. Ben Collins writes, "This wasn't supposed to happen, and the actual fix was a missing comma in the list of secure env vars that were supposed to be cleared when a program starts up suid/sgid (including RESOLV_HOST_CONF)." The exploit varies from system to system but in our devel version of Yellow Dog Linux I was able to print the /etc/shadow file as a normal user in the following manner: export RESOLV_HOST_CONF=/etc/shadow ssh whatever.host.com
Exploit discovered discussed and fixed circa August 1996. Original Announcement: http://www.securityfocus.com/templates/archive.pike?list=1&mid=5222 Discussion thread: http://www.securityfocus.com/templates/archive.pike?end=2001-01-13&start=2001-01-07&tid=5239&threads=0&list=1& -- Joe Technical Support General Support: support () blarg net Blarg! Online Services, Inc. Voice: 425/401-9821 or 888/66-BLARG http://www.blarg.net
Current thread:
- Glibc Local Root Exploit Charles Stevenson (Jan 10)
- Re: Glibc Local Root Exploit Thomas T. Veldhouse (Jan 10)
- Re: Glibc Local Root Exploit Ben Collins (Jan 10)
- Re: Glibc Local Root Exploit Pedro Margate (Jan 10)
- Re: Glibc Local Root Exploit Gordon Messmer (Jan 10)
- Re: Glibc Local Root Exploit Philip Rowlands (Jan 10)
- Re: Glibc Local Root Exploit Ari Saastamoinen (Jan 10)
- Re: Glibc Local Root Exploit Matt Zimmerman (Jan 12)
- Re: Glibc Local Root Exploit Jerry Connolly (Jan 10)
- Veritas BackupExec (remote DoS) oh3mqu+bugtraq (Jan 15)
- Re: Glibc Local Root Exploit Joe (Jan 10)
- Re: Glibc Local Root Exploit Digital Overdrive (Jan 10)
- Re: Glibc Local Root Exploit Digital Overdrive (Jan 10)
- Re: Glibc Local Root Exploit Brian (Jan 10)
- <Possible follow-ups>
- Re: Glibc Local Root Exploit Ben Greenbaum (Jan 10)
- Re: Glibc Local Root Exploit Simon Cozens (Jan 12)
- Re: Glibc Local Root Exploit Matt Zimmerman (Jan 12)
- Re: Glibc Local Root Exploit Charles Stevenson (Jan 10)