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AUSCERT External Security Bulletin Redistribution
Multiple vulnerabilities have been identified in Atlassian Bamboo
27 October 2017
AusCERT Security Bulletin Summary
Product: Atlassian Bamboo
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
CVE Names: CVE-2017-9514
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Bamboo Security Advisory 2017-10-11
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
Summary CVE-2017-9514 - Remote Code Execution in Bamboo
Advisory Release Date 11 Oct 2017 10 AM PDT (Pacific Time, -7 hours)
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
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
Remote code execution through YAML deserialization (CVE-2017-9514)
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
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
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
If you are running Bamboo 6.0.x and cannot upgrade to 6.1.4 then upgrade to
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
If you have questions or concerns regarding this advisory, please raise a
support request at https://support.atlassian.com/.
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 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
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
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