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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2724 Multiple vulnerabilities have been identified in Atlassian Bamboo 27 October 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Atlassian Bamboo Publisher: Atlassian Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-9514 Original Bulletin: https://confluence.atlassian.com/x/EZ-1Nw - --------------------------BEGIN INCLUDED TEXT-------------------- Bamboo Security Advisory 2017-10-11 Related content Bamboo security advisories Bamboo - Remote Code Execution - CVE-2017-9514 Note: As of September 2014 we are no longer issuing binary bug patches, instead we create new maintenance releases for the major versions we are backporting. Summary CVE-2017-9514 - Remote Code Execution in Bamboo Advisory Release Date 11 Oct 2017 10 AM PDT (Pacific Time, -7 hours) Product Bamboo Affected Bamboo Versions 6.0.0 <= version < 6.0.5 6.1.0 <= version < 6.1.4 Fixed Bamboo Versions for 6.0.x, Bamboo 6.0.5 has been released with a fix for this issue. for 6.1.x, Bamboo 6.1.4 has been released with a fix for this issue. for 6.2.x, Bamboo 6.2.1 has been released with a fix for this issue. CVE ID(s) CVE-2017-9514 Summary of Vulnerability This advisory discloses a critical severity security vulnerability which was introduced in version 6.0.0 of Bamboo. Versions of Bamboo starting with 6.0.0 before 6.0.5 (the fixed version for 6.0.x ), 6.1.0 before 6.1.4 (the fixed version for 6.1.x) and 6.2.0 before 6.2.1 (the fixed version for 6.2.x) are affected by this vulnerability. Customers who have upgraded Bamboo to version 6.2.1 or 6.1.4 or 6.0.5 are not affected. Customers who have downloaded and installed Bamboo >= 6.0.0 less than 6.0.5 (the fixed version for 6.0.x) Customers who have downloaded and installed Bamboo >= 6.1.0 less than 6.1.4 (the fixed version for 6.1.x) Please upgrade your Bamboo installations immediately to fix this vulnerability. Remote code execution through YAML deserialization (CVE-2017-9514) 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 Bamboo had a REST endpoint that parsed a YAML file and did not sufficiently restrict which classes could be loaded. An attacker who can log in to Bamboo as a user is able to exploit this vulnerability to execute Java code of their choice on systems that have a vulnerable version of Bamboo. Versions of Bamboo starting with 6.0.0 before 6.0.5 (the fixed version for 6.0.x ), 6.1.0 before 6.1.4 (the fixed version for 6.1.x) and 6.2.0 before 6.2.1 (the fixed version for 6.2.x) are affected by this vulnerability. This issue can be tracked here: BAM-18735 - Remote Code Execution - CVE-2017-9514 Resolved Fix We have taken the following steps to address this issue: Released Bamboo version 6.0.5 that contains a fix for this issue. Released Bamboo version 6.1.4 that contains a fix for this issue. Released Bamboo version 6.2.1 that contains a fix for this issue. What You Need to Do Atlassian recommends that you upgrade to the latest version. For a full description of the latest version of Bamboo, see the release notes. You can download the latest version of Bamboo from the download centre. Upgrade Bamboo to version 6.2.1 or higher. If you are running Bamboo 6.1.x and cannot upgrade to 6.2.1 then upgrade to version 6.1.4. If you are running Bamboo 6.0.x and cannot upgrade to 6.1.4 then upgrade to version 6.0.5. Support If you did not receive an email for this advisory and you wish to receive such emails in the future go to https://my.atlassian.com/email and subscribe to Alerts emails. If you have questions or concerns regarding this advisory, please raise a support request at https://support.atlassian.com/. References Security Bug fix Policy As per our new policy critical security bug fixes will be back ported to major software versions for up to 12 months for JIRA and Confluence. We will release new maintenance releases for the versions covered by the new policy instead of binary patches. Binary patches will no longer be released. Severity Levels for security issues Atlassian security advisories include a severity level and a CVE identifier. This severity level is based on our self-calculated CVSS score for each specific vulnerability. CVSS is an industry standard vulnerability metric. You can also learn more about CVSS at FIRST.org. End of Life Policy Our end of life policy varies for different products. Please refer to our EOL Policy for details. Last modified on Oct 10, 2017 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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