X.org X11 Server up to 1.19.4 ProcXIBarrierReleasePointer integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability was found in X.org X11 Server up to 1.19.4. It has been rated as critical. This impacts the function ProcXIBarrierReleasePointer. The manipulation leads to integer overflow. This vulnerability is referenced as CVE-2017-12179. The attack can only be performed from a local environment. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in X.org X11 Server up to 1.19.4 (Windowing System Software). This issue affects the function ProcXIBarrierReleasePointer. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

xorg-x11-server before 1.19.5 was vulnerable to integer overflow in (S)ProcXIBarrierReleasePointer functions allowing malicious X client to cause X server to crash or possibly execute arbitrary code.

The bug was discovered 10/12/2017. The weakness was published 01/24/2018 as Bug 1509220 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2017-12179 since 08/01/2017. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 41 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104776 (SUSE SLED12 / SLES12 Security Update : xorg-x11-server (SUSE-SU-2017:3047-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196948 (Ubuntu Security Notification for Xorg-server, Xorg-server-hwe-16.04, Xorg-server-lts-xenial Vulnerabilities (USN-3456-1)).

Upgrading to version 1.19.5 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104776). Similar entries are available at VDB-112383, VDB-112384, VDB-112386 and VDB-112387. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104776
Nessus Name: SUSE SLED12 / SLES12 Security Update : xorg-x11-server (SUSE-SU-2017:3047-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53379
OpenVAS Name: Debian Security Advisory DSA 4000-1 (xorg-server - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: X11 Server 1.19.5
Patch: cgit.freedesktop.org

Timelineinfo

08/01/2017 🔍
10/12/2017 +72 days 🔍
11/22/2017 +41 days 🔍
11/27/2017 +5 days 🔍
01/24/2018 +58 days 🔍
01/24/2018 +0 days 🔍
01/25/2018 +1 days 🔍
08/29/2025 +2773 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: Bug 1509220
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-12179 (🔍)
GCVE (CVE): GCVE-0-2017-12179
GCVE (VulDB): GCVE-100-112385

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 01/25/2018 08:12
Updated: 08/29/2025 16:04
Changes: 01/25/2018 08:12 (77), 12/27/2019 10:33 (3), 02/02/2023 14:19 (4), 08/29/2025 16:04 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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