CVE-2017-16997

Published: 17 December 2017

elf/dl-load.c in the GNU C Library (aka glibc or libc6) 2.19 through 2.26 mishandles RPATH and RUNPATH containing $ORIGIN for a privileged (setuid or AT_SECURE) program, which allows local users to gain privileges via a Trojan horse library in the current working directory, related to the fillin_rpath and decompose_rpath functions. This is associated with misinterpretion of an empty RPATH/RUNPATH token as the "./" directory. NOTE: this configuration of RPATH/RUNPATH for a privileged program is apparently very uncommon; most likely, no such program is shipped with any common Linux distribution.

Priority

Low

CVSS 3 base score: 7.8

Status

Package Release Status
eglibc
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr)
Released (2.19-0ubuntu6.14)
glibc
Launchpad, Ubuntu, Debian
Upstream
Released (2.27)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(2.27-3ubuntu1)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(2.27-3ubuntu1)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(2.27-3ubuntu1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (2.23-0ubuntu10)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Patches:
Upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3e3c904daef69b8bf7d5cc07f793c9f07c3553ef (master)
Upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4ebd0c4191c6073cc8a7c5fdcf1d182c4719bcbb (release/2.26/master)
Upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f24c345bf5486cc8d659f7a17463adcae402ec8e (release/2.24/master)