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CVE-2017-11171

5.5 · MEDIUM

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…

Published Jul 11, 2017CWE-835EPSS 0.32%

Overview

CVE-2017-11171 is a medium-severity vulnerability. It was published on July 11, 2017 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugzilla.suse.com/show_bug.cgi?id=1025068GitHubgithub.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9dRefbugzilla.suse.com/show_bug.cgi?id=1025068GitHubgithub.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9d

How CyberStrike helps

Frequently asked questions

What is CVE-2017-11171?

CVE-2017-11171 is a medium-severity vulnerability. It was published on July 11, 2017 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

How severe is CVE-2017-11171?

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-11171?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-11171?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-11171 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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