PT-2017-11795 · Gnome+1 · Gnome-Session+1

Published 2017-07-11 · Updated 2019-10-03 · CVE-2017-11171

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions gnome-session versions prior to 2.29.92

Description A local attacker can exploit bad reference counting in the accept ice connection() function to establish ICE connections with invalid authentication data, specifically an invalid magic cookie. Each failed authentication attempt leaks a file descriptor in gnome-session. Once the maximum number of file descriptors is exhausted, gnome-session enters an infinite loop, consuming 100% of the CPU and causing the associated graphical session to malfunction due to interrupted communication.

Recommendations For versions prior to 2.29.92, update to version 2.29.92 or later to resolve the issue. As a temporary workaround, consider restricting access to the accept ice connection() function to minimize the risk of exploitation.

Fix

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

CVE-2017-11171

SUSE-SU-2017:2173-1

SUSE-SU-2017_2173-1

Affected Products

Suse

Gnome-Session

References · 13

• https://osv.dev/vulnerability/CVE-2017-11171 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:2173-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-11171 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-11171 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-11171 · Vendor Advisory
• https://github.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9d · Note
• https://suse.com/security/cve/CVE-2017-11171 · Note
• https://suse.com/support/update/announcement/2017/suse-su-20172173-1 · Note
• https://bugzilla.suse.com/1048274 · Note
• http://lists.suse.com/mailman/listinfo/sle-security-updates · Note
• https://lists.suse.com/pipermail/sle-security-updates/2017-August/003137.html · Note
• https://bugzilla.suse.com/show_bug.cgi?id=1025068 · Note
• https://suse.com/security/cve/CVE-2017-11171.html · Note