gnome-session: Bad reference counting in accept_ice_connection() permits resource exhaustion
Published Jul 11, 2017
5.5
MEDIUMCVSS 3.0
EPSS 0.32%
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.
Affected products
No data.
- ≤ 2.29.92
No data.
Red Hat Enterprise Linux 5
gnome-session
Not affected
Red Hat Enterprise Linux 6
gnome-session
Will not fix
Red Hat Enterprise Linux 7
gnome-session
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | gnome-session | Not affected | n/a |
| Red Hat Enterprise Linux 6 | gnome-session | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | gnome-session | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
AV:L/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.32% (0.00322) | 22.88th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.32% (0.00322) | 25.44th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.33% (0.00332) | 3.01th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.33% (0.00332) | 0.00th | v1 |
References (6)
- https://access.redhat.com/security/cve/CVE-2017-11171 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1470706 Issue Tracking
- https://bugzilla.suse.com/show_bug.cgi?id=1025068 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://github.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9d x_refsource_CONFIRMThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-11171
- https://www.cve.org/CVERecord?id=CVE-2017-11171
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2017-11171 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1470706 | Issue Tracking | |
| https://bugzilla.suse.com/show_bug.cgi?id=1025068 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://github.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9d | x_refsource_CONFIRMThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-11171 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-11171 |
Change history (0)
No recorded changes yet.