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Untrusted Search Path Affecting glibc package, versions <2.23-0ubuntu10

Severity

 Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.08% (38th percentile)

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  • Snyk IDSNYK-UBUNTU1604-GLIBC-356472
  • published18 Dec 2017
  • disclosed18 Dec 2017
Report a new vulnerability Found a mistake?

Introduced: 18 Dec 2017

CVE-2017-16997  (opens in a new tab)
CWE-426  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 glibc to version 2.23-0ubuntu10 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

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.