mate-screensaver up to 1.20.1 Screen information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in mate-screensaver up to 1.20.1. It has been classified as problematic. Affected by this vulnerability is an unknown functionality. Performing a manipulation results in information disclosure (Screen). This vulnerability is identified as CVE-2018-20681. The attack may be carried out on the physical device. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in mate-screensaver up to 1.20.1. It has been classified as problematic. This affects an unknown code block. The manipulation with an unknown input leads to a information disclosure vulnerability (Screen). CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

mate-screensaver before 1.20.2 in MATE Desktop Environment allows physically proximate attackers to view screen content and possibly control applications. By unplugging and re-plugging or power-cycling external output devices (such as additionally attached graphical outputs via HDMI, VGA, DVI, etc.) the content of a screensaver-locked session can be revealed. In some scenarios, the attacker can execute applications, such as by clicking with a mouse.

The bug was discovered 04/11/2018. The weakness was released 01/09/2019 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2018-20681 since 01/09/2019. Attacking locally is a requirement. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 273 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.20.2 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 2.4
VulDB Temp Score: 2.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Screen
Class: Information disclosure / Screen
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: mate-screensaver 1.20.2

Timelineinfo

04/11/2018 🔍
01/09/2019 +273 days 🔍
01/09/2019 +0 days 🔍
01/09/2019 +0 days 🔍
01/10/2019 +1 days 🔍
06/23/2023 +1625 days 🔍

Sourcesinfo

Advisory: 152
Status: Not defined

CVE: CVE-2018-20681 (🔍)
GCVE (CVE): GCVE-0-2018-20681
GCVE (VulDB): GCVE-100-128931

Entryinfo

Created: 01/10/2019 21:16
Updated: 06/23/2023 15:04
Changes: 01/10/2019 21:16 (58), 04/27/2020 21:23 (1), 06/23/2023 15:04 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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