Vulnerability identifier: #VU51513

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-29450

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Atlassian Confluence Server
Server applications / Web servers

Vendor: Atlassian

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of file during file upload. A remote user can abuse the file upload feature to consume all available disk space and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Atlassian Confluence Server: 7.1.0 - 7.1.2

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External links
http://jira.atlassian.com/browse/CONFSERVER-60854

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.