OS Command Injection in Bitbucket Server and Bitbucket Data Center - CVE-2022-43781
Published: November 18, 2022 / Updated: March 16, 2023
Vulnerability identifier: #VU69408
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2022-43781
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Atlassian
Affected software:
Bitbucket Server
Bitbucket Data Center
Bitbucket Server
Bitbucket Data Center
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation when processing usernames. A remote attacker with ability to control their own username (e.g. with enabled "Allow public signup" option) can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2022-43781
Install updates from vendor's website.