==================================================================== CERT-Renater Note d'Information No. 2019/VULN100 _____________________________________________________________________ DATE : 17/04/2019 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running Atlassian Sourcetree versions prior to 3.1.1, 3.0.17. ===================================================================== https://confluence.atlassian.com/display/SOURCETREEKB/Sourcetree+Security+Advisory+2018-03-06 _____________________________________________________________________ This email refers to the advisory found at https://confluence.atlassian.com/display/SOURCETREEKB/Sourcetree+Security+Advisory+2018-03-06 . CVE ID: * CVE-2018-17456. * CVE-2018-20234. * CVE-2018-20235. * CVE-2018-20236. Product: Sourcetree. Affected Sourcetree product versions: 1.2 <= version < 3.1.1 0.5a <= version < 3.0.17 Fixed Sourcetree product versions: * for macOS, Sourcetree 3.1.1 has been released with a fix for these issues. * for Windows, Sourcetree 3.0.17 has been released with a fix for these issues. Summary: This advisory discloses critical severity security vulnerabilities. Versions of Sourcetree are affected by these vulnerabilities. Customers who have upgraded Sourcetree to version 3.1.1 (Sourcetree for macOS) or 3.0.17 (Sourcetree for Windows) are not affected. Customers who have downloaded and installed Sourcetree >= 1.2 but less than 3.1.1 (the fixed version for macOS) or who have downloaded and installed Sourcetree >= 0.5a but less than 3.0.17 (the fixed version for Windows) please upgrade your Sourcetree installations immediately to fix these vulnerabilities. Sourcetree for macOS - Git submodules vulnerability (CVE-2018-17456) Severity: Atlassian rates the severity level of this vulnerability as critical, according to the scale published in our Atlassian severity levels. The scale allows us to rank the severity as critical, high, moderate or low. This is our assessment and you should evaluate its applicability to your own IT environment. Description: The embedded version of Git used in Sourcetree for macOS was vulnerable to CVE-2018-17456. An attacker can exploit this issue if they can commit to a Git repository linked in Sourcetree for macOS. This allows them to execute arbitrary code on systems running a vulnerable version of Sourcetree for macOS. Versions of Sourcetree for macOS starting with version 1.2 before version 3.1.1 are affected by this vulnerability. This issue can be tracked at: https://jira.atlassian.com/browse/SRCTREE-6394 . Sourcetree for Windows - Git submodules vulnerability (CVE-2018-17456) Severity: Atlassian rates the severity level of this vulnerability as critical, according to the scale published in our Atlassian severity levels. The scale allows us to rank the severity as critical, high, moderate or low. This is our assessment and you should evaluate its applicability to your own IT environment. Description: The embedded version of Git used in Sourcetree for Windows was vulnerable to CVE-2018-17456. An attacker can exploit this issue if they can commit to a Git repository linked in Sourcetree for Windows. This allows them to execute arbitrary code on systems running a vulnerable version of Sourcetree for Windows. Versions of Sourcetree for Windows starting with version 0.5a before version 3.0.17 are affected by this vulnerability. This issue can be tracked at: https://jira.atlassian.com/browse/SRCTREEWIN-11292 . Sourcetree for macOS - Mercurial hooks vulnerability (CVE-2018-20234) Severity: Atlassian rates the severity level of this vulnerability as critical, according to the scale published in our Atlassian severity levels. The scale allows us to rank the severity as critical, high, moderate or low. This is our assessment and you should evaluate its applicability to your own IT environment. Description: There was an argument injection vulnerability in Sourcetree for macOS via filenames in Mercurial repositories. A remote attacker with permission to commit to a Mercurial repository linked in Sourcetree for macOS is able to exploit this issue to gain code execution on the system. Versions of Sourcetree for macOS starting with version 1.2 before version 3.1.1 are affected by this vulnerability. This issue can be tracked at: https://jira.atlassian.com/browse/SRCTREE-6391 . Sourcetree for Windows - Mercurial hooks vulnerability (CVE-2018-20235) Severity: Atlassian rates the severity level of this vulnerability as critical, according to the scale published in our Atlassian severity levels. The scale allows us to rank the severity as critical, high, moderate or low. This is our assessment and you should evaluate its applicability to your own IT environment. Description: There was an argument injection vulnerability in Sourcetree for Windows via filenames in Mercurial repositories. A remote attacker with permission to commit to a Mercurial repository linked in Sourcetree for Windows is able to exploit this issue to gain code execution on the system. Versions of Sourcetree for Windows starting with version 0.5a before version 3.0.15 are affected by this vulnerability. This issue can be tracked at: https://jira.atlassian.com/browse/SRCTREEWIN-11289 . Sourcetree for Windows - URI handling vulnerability (CVE-2018-20236) Severity: Atlassian rates the severity level of this vulnerability as critical, according to the scale published in our Atlassian severity levels. The scale allows us to rank the severity as critical, high, moderate or low. This is our assessment and you should evaluate its applicability to your own IT environment. Description: There was an command injection vulnerability in Sourcetree for Windows 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. Versions of Sourcetree for Windows starting with version 0.5a before version 3.0.15 are affected by this vulnerability. This issue can be tracked at: https://jira.atlassian.com/browse/SRCTREEWIN-11291 . Fix: To address these issues, we've released the following versions containing a fix: * Sourcetree version 3.1.1 (Sourcetree for macOS) * Sourcetree version 3.0.17 (Sourcetree for Windows) Remediation: Upgrade Sourcetree to version 3.0.17 (Sourcetree for Windows) or higher. The vulnerabilities and fix versions are described above. If affected, you should upgrade to the latest version immediately. If you are running Sourcetree macOS and cannot upgrade to 3.0.17 (Sourcetree for Windows), upgrade to version 3.1.1. For a full description of the latest version of Sourcetree for macOS, see the release notes found at https://product-downloads.atlassian.com/software/sourcetree/ReleaseNotes/Sourcetree_3.1.1.html. For a full description of the latest version of Sourcetree for Windows, see the release notes found at https://product-downloads.atlassian.com/software/sourcetree/windows/ga/ReleaseNotes_3.0.17.html. You can download the latest version of Sourcetree from the download centre found at https://www.sourcetreeapp.com/. Acknowledgements: Atlassian would like to credit Terry Zhang (pnig0s) at Tophant for reporting these issues to us. ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23/25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email:cert@support.renater.fr + =========================================================