screen-resolution-extra 0.17.2 screenresolution-mechanism race condition

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in screen-resolution-extra 0.17.2 and classified as critical. This issue affects some unknown processing of the component screenresolution-mechanism. Such manipulation leads to race condition. This vulnerability is documented as CVE-2018-8885. The attack needs to be performed locally. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in screen-resolution-extra 0.17.2 and classified as critical. Affected by this issue is an unknown code of the component screenresolution-mechanism. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is confidentiality, integrity, and availability. CVE summarizes:

screenresolution-mechanism in screen-resolution-extra 0.17.2 does not properly use the PolicyKit D-Bus API, which allows local users to bypass intended access restrictions by leveraging a race condition via a setuid or pkexec process that is mishandled in a PolicyKitService._check_permission call.

The bug was discovered 03/26/2018. The weakness was released 03/28/2018 (Website). The advisory is shared for download at usn.ubuntu.com. This vulnerability is handled as CVE-2018-8885 since 03/21/2018. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 108658 (Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : screen-resolution-extra vulnerability (USN-3607-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197091 (Ubuntu Security Notification for Screen-resolution-extra Vulnerability (USN-3607-1)).

Upgrading 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 (108658). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 108658
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : screen-resolution-extra vulnerability (USN-3607-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 65271
OpenVAS Name: Ubuntu Update for screen-resolution-extra USN-3607-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/21/2018 🔍
03/26/2018 +5 days 🔍
03/26/2018 +0 days 🔍
03/27/2018 +1 days 🔍
03/28/2018 +1 days 🔍
03/28/2018 +0 days 🔍
03/29/2018 +1 days 🔍
02/24/2023 +1793 days 🔍

Sourcesinfo

Advisory: USN-3607-1
Status: Not defined

CVE: CVE-2018-8885 (🔍)
GCVE (CVE): GCVE-0-2018-8885
GCVE (VulDB): GCVE-100-115196

Entryinfo

Created: 03/29/2018 09:14
Updated: 02/24/2023 14:22
Changes: 03/29/2018 09:14 (67), 01/18/2020 07:30 (3), 02/24/2023 14:22 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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