File Descriptor Exhaustion Affecting gnome/gnome-session package, versions [,2.29.92]


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.32% (26th percentile)

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  • Snyk IDSNYK-UNMANAGED-GNOMEGNOMESESSION-2367428
  • published26 Jan 2022
  • disclosed11 Jul 2017
  • creditUnknown

Introduced: 11 Jul 2017

CVE-2017-11171  (opens in a new tab)
CWE-769  (opens in a new tab)

How to fix?

There is no fixed version for gnome/gnome-session.

Overview

Affected versions of this package are vulnerable to File Descriptor Exhaustion. Bad reference counting in the context of accept_ice_connection() in gsm-xsmp-server.c in old versions of gnome-session up until version 2.29.92 allows a local attacker to establish ICE connections to gnome-session with invalid authentication data (an invalid magic cookie). Each failed authentication attempt will leak a file descriptor in gnome-session. When the maximum number of file descriptors is exhausted in the gnome-session process, it will enter an infinite loop trying to communicate without success, consuming 100% of the CPU. The graphical session associated with the gnome-session process will stop working correctly, because communication with gnome-session is no longer possible.

References

CVSS Base Scores

version 3.1