A critical flaw has been identified in Atlassian Bitbucket Server and Data Center, a widely used Git-based source code repository hosting service. This flaw, known as CVE-2022-36804, is categorized as a command injection vulnerability affecting multiple API endpoints. Exploitation of this vulnerability allows unauthorized parties to execute malicious code, thus posing a significant security threat. The severity of this flaw is classified as critical, with a CVSS score of 9.9. The affected versions range from 7.0.0 to 8.3.0, while users accessing Bitbucket via the bitbucket.org domain remain unaffected. Atlassian has promptly released fixed versions and urges users to upgrade without delay. Furthermore, Bitbucket Mesh nodes should be updated with the corresponding version. As a temporary partial mitigation, users have the option to disable public repositories. The potential consequences of this vulnerability are severe, as it grants attackers the ability to execute arbitrary code. Consequently, Atlassian has issued an advisory to raise awareness and provide guidance on addressing this vulnerability.
Key Takeaways
- The critical flaw in Atlassian Bitbucket Server and Data Center allows for the execution of malicious code.
- The vulnerability is tracked as (CVE-2022-36804) and is a command injection vulnerability found in multiple API endpoints.
- The severity level of this flaw is considered critical, with a severity score of 9.9 on the CVSS scale.
- The vulnerability affects all versions after 6.10.17, including 7.0.0 and newer, and users with access to public or private repositories can execute arbitrary code through a malicious HTTP request.
Vulnerability Details
The vulnerability in Atlassian Bitbucket Server and Data Center, tracked as (CVE-2022-36804), is a critical command injection flaw found in multiple API endpoints, allowing attackers to execute malicious code. Command injection vulnerabilities can be exploited by attackers to inject arbitrary commands into a vulnerable application, which are then executed by the system. To exploit this vulnerability, an attacker with access to a public or private repository can execute arbitrary code through a malicious HTTP request. To secure source code repositories, it is essential to follow best practices such as input validation and sanitization, using parameterized queries, and implementing proper access controls. Regular security audits, patching, and updating the software to the latest versions are also recommended.
Affected Versions
Versions between 7.0.0 and 8.3.0, including 6.10.17, are impacted by the vulnerability in Atlassian Bitbucket Server and Data Center. This critical flaw, tracked as CVE-2022-36804, allows for the execution of malicious code. The severity level of this vulnerability is rated as critical, with a CVSS severity score of 9.9.
To better understand the affected versions, here are four key points:
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Potential Exploits: Attackers who have access to public or private repositories can execute arbitrary code through a malicious HTTP request. This flaw can lead to the execution of malicious activities within the Bitbucket system.
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Prevention Measures: Atlassian advises users to upgrade their Bitbucket instances to the fixed versions. Additionally, for users utilizing Bitbucket Mesh nodes, it is necessary to update them with the corresponding version. As a temporary partial mitigation, users can turn off public repositories.
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Exemption for bitbucket.org: Users accessing Bitbucket via the bitbucket.org domain are not affected by this vulnerability.
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Severity Level: This vulnerability is considered critical due to its potential impact of allowing attackers to execute arbitrary code. It is essential for affected users to take immediate action to mitigate the risk.
Mitigation Options
One possible mitigation option for the vulnerability in Atlassian Bitbucket Server and Data Center is to upgrade the affected instances to the fixed versions. This approach involves updating the Bitbucket software to the listed versions provided by Atlassian. Additionally, users can update the Bitbucket Mesh nodes with the corresponding version to ensure complete protection. Another temporary partial mitigation option is to turn off public repositories, as the vulnerability primarily affects instances with access to public or private repositories. It is important to note that users accessing Bitbucket via the bitbucket.org domain are not affected by this vulnerability. By upgrading the software and implementing these mitigation options, organizations can effectively reduce the risk of code execution through the identified flaw.
Impact of Vulnerability
The identified vulnerability in Atlassian Bitbucket Server and Data Center poses a significant risk to the security and integrity of organizations‘ source code repositories. Exploiting this critical flaw allows attackers to execute arbitrary code, potentially leading to unauthorized access, data breaches, and the compromise of sensitive information. The severity level of this vulnerability is rated as critical, with a CVSS severity score of 9.9. The consequences of code execution in Atlassian Bitbucket are far-reaching, as it enables attackers to manipulate and modify source code, inject malicious code into the repository, and potentially disrupt the functionality of the software. The implications of this critical flaw in Bitbucket Server and Data Center necessitate immediate action to mitigate the risk and ensure the protection of organizations‘ source code repositories.
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Atlassian’s Response
Atlassian has taken prompt action in response to the identified vulnerability in its Bitbucket Server and Data Center, addressing the issue with a comprehensive approach. The company has implemented a communication strategy to inform users about the vulnerability and the necessary steps to mitigate the risk. They have published an advisory warning about the flaw and its severity, emphasizing the urgency of upgrading to the fixed versions. Atlassian also recommends updating Bitbucket Mesh nodes with the corresponding version and temporarily turning off public repositories as a partial mitigation. Additionally, they have provided best practices for securing Git-based source code repositories to help users prevent similar vulnerabilities in the future. By promptly addressing the flaw and effectively communicating with users, Atlassian demonstrates its commitment to maintaining the security of its product and protecting its users‘ data.
Frequently Asked Questions
How does the command injection vulnerability in Atlassian Bitbucket Server and Data Center work?
The command injection vulnerability in Atlassian Bitbucket Server and Data Center allows attackers to execute arbitrary code. This can lead to severe consequences such as unauthorized access, data breaches, and system compromise. To detect and prevent command injection attacks, software applications should implement input validation, proper sanitization of user input, and the use of parameterized queries in database operations. Regular security assessments and code reviews can also help identify and address vulnerabilities.
What are the specific versions of Bitbucket Server and Data Center that are affected by this vulnerability?
The specific versions of Bitbucket Server and Data Center affected by this vulnerability are all instances running versions between 7.0.0 and 8.3.0 inclusive, as well as versions released after 6.10.17.
What are the recommended mitigation options to address this vulnerability?
Recommended mitigation options to address the vulnerability in Atlassian Bitbucket Server and Data Center include upgrading to fixed versions, updating Bitbucket Mesh nodes, and temporarily turning off public repositories. These steps help secure Bitbucket against the execution of malicious code.
What is the potential impact of this vulnerability on Bitbucket Server and Data Center?
The potential consequences of the vulnerability in Bitbucket Server and Data Center include the execution of arbitrary code by attackers, which poses significant security implications. This flaw has a critical severity level and received a CVSS severity score of 9.9.
How has Atlassian responded to this critical security flaw in Bitbucket?
Atlassian has responded to the critical security flaw in Bitbucket by advising users to upgrade to fixed versions, update Bitbucket Mesh nodes, and consider temporarily turning off public repositories. The potential impact of this flaw on Bitbucket Server and Data Center is significant.
