Atlassian SourceTree up to 3.0.9 on Windows URI command injection

Summaryinfo

A vulnerability identified as critical has been detected in Atlassian SourceTree up to 3.0.9 on Windows. Affected by this vulnerability is an unknown functionality of the component URI Handler. The manipulation leads to command injection. This vulnerability is listed as CVE-2018-20236. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Atlassian SourceTree up to 3.0.9 on Windows. This issue affects some unknown functionality of the component URI Handler. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

There was an command injection vulnerability in Sourcetree for Windows from version 0.5a before version 3.0.10 via URI handling. A remote attacker could send a malicious URI to a victim using Sourcetree for Windows to exploit this issue to gain code execution on the system.

The bug was discovered 02/20/2019. The weakness was presented 03/08/2019 (Website). It is possible to read the advisory at jira.atlassian.com. The identification of this vulnerability is CVE-2018-20236 since 12/19/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 16 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371705 (Atlassian Sourcetree Multiple Remote Code Execution Vulnerabilities).

Upgrading to version 3.0.10 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105523†). See VDB-124949, VDB-131481 and VDB-131482 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Atlassian

Name

• SourceTree

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9

License

• free

Website

• Vendor: https://www.atlassian.com/

CPE 2.3info

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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