Arbitrary file upload in Confluence Server - CVE-2020-29450
Published: March 16, 2021
Vulnerability identifier: #VU51513
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-29450
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Confluence Server
How to mitigate CVE-2020-29450
Install update from vendor's website.
Confluence Server - update to 7.2.0