CVE-2017-11171

Name: CVE-2017-11171
Creator: NVD / NIST
Published: 2017-07-11T20:29:00.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.32%

Last modified Jun 17, 2026

CVE-2017-11171 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

0.32%

23.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-835

Affected Software

Vendor	Product	Versions
Gnome	Gnome-Session	<= 2.29.92

References

https://bugzilla.suse.com/show_bug.cgi?id=1025068Issue Tracking, Third Party Advisory
https://github.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9dThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1025068Issue Tracking, Third Party Advisory
https://github.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9dThird Party Advisory

Timeline

Published: Jul 11, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-11171?

How severe is CVE-2017-11171?

Severity scoring for CVE-2017-11171 is pending analysis. The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2017-11171?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-11171?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST