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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.



CVSS 3 base score: 7.8


Package Release Status
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

precise Ignored
(end of ESM support, was needed)
Released (2.19-0ubuntu6.14)
upstream Needs triage

xenial Does not exist

zesty Does not exist

Launchpad, Ubuntu, Debian
Released (2.26-0ubuntu2.1)
bionic Not vulnerable
cosmic Not vulnerable
disco Not vulnerable
eoan Not vulnerable
focal Not vulnerable
groovy Not vulnerable
hirsute Not vulnerable
precise Does not exist

trusty Does not exist

Released (2.27)
Released (2.23-0ubuntu10)
zesty Ignored
(reached end-of-life)