DoS (Denial of Service) at org.apache.activemq dependency in Bamboo Data Center

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    • Type: Public Security Vulnerability
    • Resolution: Fixed
    • Priority: High
    • 10.2.18, 9.6.25, 12.1.7
    • Affects Version/s: 9.6.0, 10.0.0, 9.6.1, 9.6.2, 9.6.3, 9.6.4, 9.6.5, 9.6.6, 10.1.0, 10.0.1, 9.6.7, 10.0.2, 9.6.8, 10.0.3, 10.2.0, 9.6.9, 10.1.1, 9.6.10, 11.0.0, 10.2.1, 10.2.2, 10.2.3, 9.6.11, 9.6.12, 12.0.0, 10.2.4, 9.6.13, 11.0.1, 9.6.14, 10.2.5, 11.0.2, 11.0.3, 10.2.6, 9.6.15, 10.2.7, 11.0.4, 12.1.0, 9.6.16, 10.2.8, 11.0.5, 9.6.17, 9.6.18, 10.2.9, 11.0.7, 11.0.8, 10.2.10, 9.6.19, 10.2.11, 12.0.1, 9.6.20, 9.6.21, 12.0.2, 10.2.12, 12.1.1, 10.2.13, 9.6.22, 10.2.14, 10.2.15, 12.1.2, 9.6.23, 12.1.3, 9.6.24, 10.2.16, 12.1.6, 10.2.17
    • Component/s: None
    • 7.5
    • High
    • CVE-2026-39304
    • Atlassian (Internal)
    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    • DoS (Denial of Service)
    • Bamboo Data Center

      This High severity DoS (Denial of Service) vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 12.0.0, and 12.1.0 of Bamboo Data Center.

      This DoS (Denial of Service) vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H allows an unauthenticated attacker to cause a resource to be unavailable for its intended users by temporarily or indefinitely disrupting services of a host connected to a network which has no impact to confidentiality, no impact to integrity, high impact to availability, and requires no user interaction.

      Atlassian recommends that Bamboo Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:

      • Bamboo Data Center 9.6: Upgrade to a release greater than or equal to 9.6.25
      • Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.18
      • Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.7

      See the release notes (https://confluence.atlassian.com/bambooreleases/bamboo-release-notes-1189793869.html). You can download the latest version of Bamboo Data Center from the download center (https://www.atlassian.com/software/bamboo/download-archives).

      The National Vulnerability Database provides the following description for this vulnerability: Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ.

      ActiveMQ NIO SSL transports do not correctly handle TLSv1.3 handshake KeyUpdates triggered by clients. This makes it possible for a client to rapidly trigger updates which causes the broker to exhaust all its memory in the SSL engine leading to DoS.

      Note: TLS versions before TLSv1.3 (such as TLSv1.2) are broken but are not vulnerable to OOM. Previous TLS versions require a full handshake renegotiation which causes a connection to hang but not OOM. This is fixed as well.
      This issue affects Apache ActiveMQ Client: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ Broker: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ: before 5.19.4, from 6.0.0 before 6.2.4.

      Users are recommended to upgrade to version 6.2.4 or 5.19.5, which fixes the issue.

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              Unassigned
              Reporter:
              Security Metrics Bot
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                Created:
                Updated:
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