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Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') Affecting glibc package, versions <0:2.17-260.el7

Severity

 Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.08% (38th percentile)

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  • Snyk IDSNYK-RHEL7-GLIBC-4897113
  • published26 Jul 2021
  • disclosed17 Dec 2017
Report a new vulnerability Found a mistake?

Introduced: 17 Dec 2017

CVE-2017-16997  (opens in a new tab)
CWE-470  (opens in a new tab)

How to fix?

Upgrade RHEL:7 glibc to version 0:2.17-260.el7 or higher.
This issue was patched in RHSA-2018:3092.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by RHEL. See How to fix? for RHEL:7 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.