xorg-x11-server: Unvalidated extra length in ProcEstablishConnection
Published Jan 24, 2018
9.8
CRITICALCVSS 3.0
EPSS 4.17%
Description
xorg-x11-server before 1.19.5 was missing extra length validation in ProcEstablishConnection function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Affected products
-
- Version before 1.19.5StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| The X.Org Foundation | Xorg-X11-Server | n/a |
|
Configuration 1
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 5
xorg-x11-server
Will not fix
Red Hat Enterprise Linux 6
xorg-x11-server
Will not fix
Red Hat Enterprise Linux 7
xorg-x11-server
Will not fix
Red Hat Enterprise Linux 9
xorg-x11-server
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xorg-x11-server | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | xorg-x11-server | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | xorg-x11-server | Will not fix | n/a |
| Red Hat Enterprise Linux 9 | xorg-x11-server | 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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.17% (0.04166) | 90.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.51% (0.04507) | 90.25th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.00% (0.00995) | 74.91th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.23% (0.03232) | 78.31th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.00% (0.00995) | 75.38th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.79% (0.00794) | 82.29th | v3 (v2023.03.01) |
| Jun 22, 2024 | 0.79% (0.00794) | 81.68th | v3 (v2023.03.01) |
| Jan 4, 2024 | 0.79% (0.00794) | 79.68th | v3 (v2023.03.01) |
| Dec 4, 2023 | 0.80% (0.00803) | 79.66th | v3 (v2023.03.01) |
| Aug 20, 2023 | 0.82% (0.00819) | 79.68th | v3 (v2023.03.01) |
| Jul 27, 2023 | 1.04% (0.01043) | 82.04th | v3 (v2023.03.01) |
| Jun 17, 2023 | 1.27% (0.01268) | 83.73th | v3 (v2023.03.01) |
| May 8, 2023 | 1.58% (0.01581) | 85.36th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.06% (0.02064) | 87.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.58% (0.02578) | 82.08th | v2 (v2022.01.01) |
| Oct 21, 2022 | 2.58% (0.02578) | 81.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.51% (0.02509) | 80.08th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.51% (0.02509) | 58.60th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.18% (0.02177) | 50.59th | v1 |
| Jan 6, 2022 | 2.18% (0.02177) | 50.09th | v1 |
| Sep 1, 2021 | 2.18% (0.02177) | 77.45th | v1 |
| Apr 14, 2021 | 2.18% (0.02177) | 0.00th | v1 |
References (8)
- https://access.redhat.com/security/cve/CVE-2017-12176 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1509214 x_refsource_CONFIRMIssue TrackingPatchThird Party AdvisoryVDB Entry
- https://cgit.freedesktop.org/xorg/xserver/commit/?id=b747da5e25be944337a9cd1415506fc06b70aa81 x_refsource_CONFIRMPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-12176
- https://security.gentoo.org/glsa/201711-05 vendor-advisoryx_refsource_GENTOOThird Party AdvisoryVDB Entry
- https://www.cve.org/CVERecord?id=CVE-2017-12176
- https://www.debian.org/security/2017/dsa-4000 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2017-12176 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1509214 | x_refsource_CONFIRMIssue TrackingPatchThird Party AdvisoryVDB Entry | |
| https://cgit.freedesktop.org/xorg/xserver/commit/?id=b747da5e25be944337a9cd1415506fc06b70aa81 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-12176 | ||
| https://security.gentoo.org/glsa/201711-05 | vendor-advisoryx_refsource_GENTOOThird Party AdvisoryVDB Entry | |
| https://www.cve.org/CVERecord?id=CVE-2017-12176 | ||
| https://www.debian.org/security/2017/dsa-4000 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.