Zoom up to 5.4.3/5.5.4 on Windows/Linux Screen Sharing 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.
4.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Zoom up to 5.4.3/5.5.4 on Windows/Linux and classified as problematic. This impacts an unknown function of the component Screen Sharing Handler. This manipulation causes information disclosure. This vulnerability appears as CVE-2021-28133. The attack may be initiated remotely. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in Zoom up to 5.4.3/5.5.4 on Windows/Linux. Affected by this vulnerability is an unknown part of the component Screen Sharing Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.

The weakness was presented 03/19/2021 as SYSS-2020-044. The advisory is shared at syss.de. This vulnerability is known as CVE-2021-28133. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

It is possible to download the exploit at packetstormsecurity.com. It is declared as proof-of-concept.

Upgrading eliminates this vulnerability.

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

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

Video

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
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

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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: 🔍

Timelineinfo

03/10/2021 🔍
03/19/2021 +9 days 🔍
03/19/2021 +0 days 🔍
01/20/2025 +1403 days 🔍

Sourcesinfo

Advisory: SYSS-2020-044
Status: Confirmed

CVE: CVE-2021-28133 (🔍)
GCVE (CVE): GCVE-0-2021-28133
GCVE (VulDB): GCVE-100-171433
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/19/2021 07:07
Updated: 01/20/2025 15:16
Changes: 03/19/2021 07:07 (38), 03/19/2021 07:08 (1), 04/02/2021 19:45 (2), 04/02/2021 19:47 (18), 06/09/2024 00:27 (23), 01/20/2025 15:12 (1), 01/20/2025 15:16 (8)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

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

Discussion

 boit-caleb (+0)
7 months ago
seems like this might still be an issue? VA scanners are still picking this up

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