ActiveMQ: flaw within failover mechanism when handling openwire requests can lead to DoS
Published Jan 5, 2012
5.0
MEDIUMCVSS 2.0
EPSS 8.44%
Description
Apache ActiveMQ before 5.6.0 allows remote attackers to cause a denial of service (file-descriptor exhaustion and broker crash or hang) by sending many openwire failover:tcp:// connection requests.
Affected products
No data.
- ≤ 5.5.1
- 1.1
- 1.2
- 1.3
- 1.4
- 1.5
- 2.0
- 2.1
- 3.0
- 3.1
- 3.2
- 3.2.1
- 3.2.2
- 4.0
- 4.0
- 4.0
- 4.0.1
- 4.0.2
- 4.1.0
- 4.1.1
- 4.1.2
- 5.0.0
- 5.1.0
- 5.2.0
- 5.3.0
- 5.3.1
- 5.3.2
- 5.4.0
- 5.4.1
- 5.4.2
- 5.4.3
- 5.5.0
No data.
Red Hat JBoss BRMS 5
unspecified
Under investigation
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat JBoss BRMS 5 | unspecified | Under investigation | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. Apache ActiveMQ is not shipped with any supported Red Hat products.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 8.44% (0.08436) | 94.84th | v5 (v2026.06.15) |
| Jun 16, 2026 | 8.98% (0.08984) | 94.59th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.16% (0.05158) | 91.33th | v5 (v2026.06.15) |
| Feb 9, 2026 | 12.50% (0.12504) | 93.75th | v4 (v2025.03.14) |
| Aug 21, 2025 | 10.15% (0.10147) | 92.81th | v4 (v2025.03.14) |
| Jul 18, 2025 | 7.74% (0.07735) | 91.49th | v4 (v2025.03.14) |
| Jun 30, 2025 | 8.79% (0.08790) | 92.07th | v4 (v2025.03.14) |
| Jun 11, 2025 | 10.15% (0.10147) | 92.71th | v4 (v2025.03.14) |
| Jun 10, 2025 | 13.08% (0.13081) | 93.71th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.32% (0.10317) | 92.45th | v4 (v2025.03.14) |
| Mar 29, 2025 | 20.55% (0.20551) | 92.78th | v4 (v2025.03.14) |
| Mar 25, 2025 | 10.32% (0.10317) | 92.40th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.21% (0.02207) | 83.29th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.84% (0.00844) | 82.83th | v3 (v2023.03.01) |
| Jan 24, 2024 | 0.84% (0.00844) | 80.34th | v3 (v2023.03.01) |
| Jun 2, 2023 | 0.83% (0.00831) | 79.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.87% (0.00869) | 79.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.07% (0.02072) | 79.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.07% (0.02072) | 77.99th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.07% (0.02072) | 56.68th | v2 (v2022.01.01) |
References (16)
- http://openwall.com/lists/oss-security/2011/12/25/2 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2011/12/25/6 mailing-listx_refsource_MLIST
- http://secunia.com/advisories/47112 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://svn.apache.org/viewvc?view=revision&revision=1209700 x_refsource_CONFIRM
- http://svn.apache.org/viewvc?view=revision&revision=1211844 x_refsource_CONFIRM
- http://www.securityfocus.com/bid/50904 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2011-4905 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=769770 Issue Tracking
- https://github.com/advisories/GHSA-9wcx-326r-7j7w Advisory
- https://github.com/apache/activemq/commit/3a71f8e33d0309cb0ca5b5758a8f251da205e757
- https://github.com/apache/activemq/commit/9df9d3e89140b7329654ad5675259ec6f0c4b3a7
- https://github.com/apache/activemq/commit/da7f9962c640666a743675085922bf75a656f81b
- https://issues.apache.org/jira/browse/AMQ-1928
- https://issues.apache.org/jira/browse/AMQ-3294 x_refsource_CONFIRMExploit
- https://nvd.nist.gov/vuln/detail/CVE-2011-4905
- https://www.cve.org/CVERecord?id=CVE-2011-4905
Change history (0)
No recorded changes yet.