Critical flaw impacts Atlassian Bitbucket Server and Data Center
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2022-36804 | Command Injection RCE in Atlassian Bitbucket Server and Data Center Multiple API endpoints in Atlassian Bitbucket Server and Data Center contain an OS command injection flaw (CWE-78, with argument injection CWE-88) that allows a remote attacker to run arbitrary commands on the server. It is triggered by sending a malicious HTTP request to an affected API endpoint and requires only read permission to any public or private Bitbucket repository, meaning most authenticated users — and users of public repositories — can trigger it. Successful exploitation yields arbitrary code execution on the Bitbucket host, exposing source code and potentially the wider system. All Bitbucket Server and Data Center releases from 7.0.0 through the listed pre-fix versions are affected, with fixes in 7.6.17, 7.17.10, 7.21.4, 8.0.3, 8.1.3, 8.2.2, and 8.3.1. The flaw is being actively exploited: CISA added it to the Known Exploited Vulnerabilities Catalog on 2022-09-30, public PoC exploits exist, and EPSS assigns a ~99.2% probability of exploitation within 30 days. Do: Immediately upgrade Bitbucket Server/Data Center per vendor instructions to 7.6.17+, 7.17.10+, 7.21.4+, 8.0.3+, 8.1.3+, 8.2.2+, or 8.3.1+ depending on your release branch — this is a CISA KEV-listed, actively exploited vulnerability. Until patched, restrict internet-facing access to Bitbucket instances and review HTTP access and audit logs for suspicious requests to REST API endpoints, which would indicate attempted or successful exploitation. | 8.8 | 99% | KEV PoC ×2 |
| largetens of thousands of internet-exposed Bitbucket Server/Data Center instances, with a substantially larger total installed base on internal networks |
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Atlassian addressed a critical vulnerability in Bitbucket Server and Data Center that could lead to malicious code execution on vulnerable instances.
Atlassian fixed a critical flaw in Bitbucket Server and Data Center, tracked as CVE-2022-36804 (CVSS score 9.9), that could be explored to execute malicious code on vulnerable installs
The flaw is a command injection vulnerability that can be exploited via specially crafted HTTP requests.
“This advisory discloses a critical severity security vulnerability which was introduced in version 7.0.0 of Bitbucket Server and Data Center.” reads the advisory. “There is a command injection vulnerability in multiple API endpoints of Bitbucket Server and Data Center. An attacker with access to a public repository or with read permissions to a private Bitbucket repository can execute arbitrary code by sending a malicious HTTP request.”
The issue impacts all versions released after 6.10.17 including 7.0.0 and newer are affected, this means that all installs that are running any versions between 7.0.0 and 8.3.0 inclusive are impacted.
Domains hosted by Atlassian are not affected by this issue.
“If you’re unable to upgrade Bitbucket, a temporary mitigation step is to turn off public repositories globally by setting feature.public.access=false as this will change this attack vector from an unauthorized attack to an authorized attack. This can not be considered a complete mitigation as an attacker with a user account could still succeed.” continues the advisory.
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(SecurityAffairs – hacking, Atlassian)
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Text extracted automatically; images, tables and formatting may be missing. Original: https://securityaffairs.com/134896/hacking/atlassian-bitbucket-flaw.html