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.
Exploits (1)
exploitdb
WRITEUP
VERIFIED
by Tymm Twillman · textremotelinux
https://www.exploit-db.com/exploits/19503
References (15)
Core 15
Core References
Various Sources vendor-advisory
x_refsource_mandrake
http://www.linux-mandrake.com/en/updates/MDKSA-2000-045.php3
Third Party Advisory, VDB Entry vdb-entry
x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/5173
Mailing List mailing-list
x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=93760201002154&w=2
Vendor Advisory vendor-advisory
x_refsource_suse
http://www.novell.com/linux/security/advisories/adv5_draht_glibc_txt.html
Third Party Advisory mailing-list
x_refsource_bugtraq
http://archives.neohapsis.com/archives/bugtraq/2000-08/0525.html
Vendor Advisory vendor-advisory
x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2000-057.html
Third Party Advisory mailing-list
x_refsource_bugtraq
http://archives.neohapsis.com/archives/bugtraq/2000-08/0436.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/1639
Various Sources vendor-advisory
x_refsource_turbo
http://www.turbolinux.com/pipermail/tl-security-announce/2000-September/000020.html
Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2000/20000902
Patch, Vendor Advisory mailing-list
x_refsource_bugtraq
http://www.securityfocus.com/archive/1/79537
Third Party Advisory mailing-list
x_refsource_bugtraq
http://archives.neohapsis.com/archives/bugtraq/2000-08/0509.html
Exploit, Patch, Vendor Advisory vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/648
Vendor Advisory vendor-advisory
x_refsource_caldera
http://www.calderasystems.com/support/security/advisories/CSSA-2000-028.0.txt
Various Sources vendor-advisory
x_refsource_mandrake
http://www.linux-mandrake.com/en/updates/MDKSA-2000-040.php3
Scores
EPSS
0.0031
EPSS Percentile
53.9%
Details
Status
published
Products (1)
gnu/glibc
2.1.1
Published
Nov 14, 2000
Tracked Since
Feb 18, 2026