Access Restriction Bypass Affecting glibc package, versions <2.21-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.35% (27th percentile)

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  • Snyk IDSNYK-ECHOLATEST-GLIBC-18610821
  • published11 Aug 2026
  • disclosed9 Oct 2013

Introduced: 9 Oct 2013

CVE-2013-2207  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade Echo:latest glibc to version 2.21-1 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 Echo. See How to fix? for Echo:latest relevant fixed versions and status.

pt_chown in GNU C Library (aka glibc or libc6) before 2.18 does not properly check permissions for tty files, which allows local users to change the permission on the files and obtain access to arbitrary pseudo-terminals by leveraging a FUSE file system.

CVSS Base Scores

version 3.1