| 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. |
|---|---|---|
| 6.0 | $0-$5k | 0.26 |
A vulnerability was found in Nextcloud Talk up to 11.2.1 (Cloud Software). It has been rated as critical. Affected by this issue is some unknown processing of the component Chat Message Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:
Nextcloud Talk is a fully on-premises audio/video and chat communication service. In versions prior to 11.2.2, if a user was able to reuse an earlier used username, they could get access to any chat message sent to the previous user with this username. The issue was patched in versions 11.2.2 and 11.3.0. As a workaround, don’t allow users to choose usernames themselves. This is the default behaviour of Nextcloud, but some user providers may allow doing so.
The weakness was disclosed 07/13/2021. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-32689 since 05/12/2021. The exploitation is known to be easy. The attack may be launched remotely. Required for exploitation is a simple authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.
Upgrading to version 11.2.2 or 11.3.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.
Type
Vendor
Name
VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍
| AV | AC | Au | C | I | A |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Privilege escalation
CWE: CWE-264
ATT&CK: T1068
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
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| Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: Upgrade
Status: 🔍
0-Day Time: 🔒
Upgrade: Talk 11.2.2/11.3.0
Patch: github.com
05/12/2021 CVE assigned
07/13/2021 Advisory disclosed
07/13/2021 VulDB entry created
07/15/2021 VulDB last updateAdvisory: github.com
Status: Confirmed
Confirmation: 🔒
CVE: CVE-2021-32689 (🔒)
Created: 07/13/2021 08:35
Updated: 07/15/2021 23:47
Changes: (1) source_cve_cna
Complete: 🔍
Comments
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