CVE-2017-16997

Advisory lineage Upstream: 0 Downstream: 8
Modified
Published: 18 Dec 2017, 01:00
Last modified:05 Aug 2024, 20:43

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.3 HIGH
v2.0 (nvd)
EPSS Score
1.13% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Dec 2017, 01:00
Published
Vulnerability first disclosed
05 Aug 2024, 20:43
Last Modified
Vulnerability information updated

Description

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 Metrics

  • v3.0•HIGH•Score: 7.8CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 9.3AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 1.13%• Percentile: 79%

Techniques & Countermeasures

  • CWE-426•Untrusted Search Path

    The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.

Affected Systems

  • gnu•glibc

    2.19 | 2.20 | 2.21 | 2.22 | 2.23 | 2.25 | 2.26

  • redhat•enterprise_linux_desktop

    7.0

  • redhat•enterprise_linux_server

    7.0

  • redhat•enterprise_linux_workstation

    7.0

References (6)