Vulnerability Report

CVE-2017-11171

Title: Gnome Gnome-Session Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2017-11171.

CWE Category CWE-835

Published Date Jul 11, 2017

Modified Date Jun 17, 2026

Exploit Status Not Found

Score 5.5 CVSS v3.0

Exploit Probability (EPSS)

0.32%

Vulnerability Summary

CVE-2017-11171: 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.

Impacted Vendors

gnome 1

Reference Links

https://bugzilla.suse.com/show_bug.cgi?id=1025068 https://github.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9d https://bugzilla.suse.com/show_bug.cgi?id=1025068 https://github.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9d

CVSS v3.0

Source Entity [email protected]

Severity MEDIUM

5.5

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.9

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:N/I:N/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns