Description
The unsetenv function in glibc 2.1.1 does not properly unset an environmental variable if the variable is provided twice to a program, which could allow local users to execute arbitrary commands in setuid programs by specifying their own duplicate environmental variables such as LD_PRELOAD or LD_LIBRARY_PATH.
Affected products
- gnu / glibc2.1.1 – 2.1.1
Exploits & proofs of concept
- exploit-dbProFTPd 1.2 pre6 - 'snprintf' Remote Rootby Tymm Twillman
References
- MISChttps://exchange.xforce.ibmcloud.com/vulnerabilities/5173
- MAILING_LISThttp://marc.info/?l=bugtraq&m=93760201002154&w=2
- VENDOR_ADVISORYhttp://www.novell.com/linux/security/advisories/adv5_draht_glibc_txt.html
- MISChttp://archives.neohapsis.com/archives/bugtraq/2000-08/0525.html
- MISChttp://www.redhat.com/support/errata/RHSA-2000-057.html
- MISChttp://www.linux-mandrake.com/en/updates/MDKSA-2000-045.php3
- MISChttp://archives.neohapsis.com/archives/bugtraq/2000-08/0436.html
- MISChttp://www.securityfocus.com/bid/1639
- MISChttp://www.turbolinux.com/pipermail/tl-security-announce/2000-September/000020.html
- VENDOR_ADVISORYhttp://www.debian.org/security/2000/20000902
- MISChttp://www.securityfocus.com/archive/1/79537
- MISChttp://archives.neohapsis.com/archives/bugtraq/2000-08/0509.html
- MISChttp://www.securityfocus.com/bid/648
- VENDOR_ADVISORYhttp://www.calderasystems.com/support/security/advisories/CSSA-2000-028.0.txt
- MISChttp://www.linux-mandrake.com/en/updates/MDKSA-2000-040.php3
Updated 18m ago · 8 sources