Atlassian’s security response team has issued an urgent advisory to warn of a critical command injection flaw in its Bitbucket Server and Data Center product.
The vulnerability carries a CVSS severity score of 9.9 out of 10 and can be exploited remotely to launch code execution attacks, Atlassian said.
Atlassian said the security defect, tracked as CVE-2022-36804, was introduced in version 7.0.0 of Bitbucket Server and Data Center.
From the alert:
“There is a command injection vulnerability in multiple API endpoints of Bitbucket Server and Data Center. An attacker with access to a public Bitbucket repository or with read permissions to a private one can execute arbitrary code by sending a malicious HTTP request.
All versions released after 6.10.17 including 7.0.0 and newer are affected, this means that all instances that are running any versions between 7.0.0 and 8.3.0 inclusive can be exploited by this vulnerability.”
The company said Atlassian Cloud sites are not affected by this issue.
The disclosure of a new critical-severity issue from Atlassian follows the documentation of in-the-wild attacks hitting the Australian company’s widely deployed Confluence software product.
This year alone, the U.S. government’s cybersecurity response agency CISA has listed four distinct Atlassian software flaws in its KEV (Known Exploited Vulnerabilities) catalog