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CVE-2011-5034

83
FAUCET Score

CVE-2011-5034 describes a denial-of-service vulnerability affecting Apache Geronimo 2.2.1 and earlier, where the server is susceptible to hash collision attacks. By sending numerous crafted form parameters, remote attackers can trigger excessive CPU consumption, leading to a denial of service. This vulnerability has a high CVSS score of 7.8, indicating a critical severity due to its network-based attack vector, low attack complexity, and complete availability impact. While not listed in CISA's KEV catalog, there is a Metasploit module available for hashtable collisions, and its FAUCET Risk Score is 99/100, suggesting a high potential for exploitation despite limited public discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.2.1CPE matchmatch criteria
cpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:apache:geronimo:1.0:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:apache:geronimo:1.1:*:*:*:*:*:*:*
1.1.1CPE matchmatch criteria
cpe:2.3:a:apache:geronimo:1.1.1:*:*:*:*:*:*:*
1.2CPE matchmatch criteria
cpe:2.3:a:apache:geronimo:1.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

AV:N/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
81.16%
Probability of exploitation in next 30 days
EPSS Percentile
99.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: Hashtable Collisions · Dec 28, 2011
ExploitDB: EDB-2012 · Jul 15, 2006
This CVE's current EPSS score of 0.8115 is in the 99th percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.apache.geronimo:geronimoFixed in: 2.2.1
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 13 (Queens)Fixed in: opendaylight

Vendor Advisories (2)

mavenGHSA-v3h8-rw48-h4grhigh

Apache Geronimo Hash Collisions Cause DoS

May 13, 2022
redhatCVE-2011-5034Moderate

apache-geronimo: hash table collisions CPU usage DoS

Dec 29, 2011

References

archives.neohapsis.com / archives/bugtraq/2011-12/0181.html
secunia.com / advisories/47412
github.com / FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py
lists.apache.org / thread.html/r20957aa5962a48328f199e2373f408aeeae601a45dd5275a195e2b6e%40%3Cjava-dev.axis.apache.org%3E
lists.apache.org / thread.html/r360b70489bad65286b49ceb5303a849d2a7ec7d1292774a7259579e1%40%3Cissues.karaf.apache.org%3E
lists.apache.org / thread.html/r3c541f019b74902e8e61d73e40ecc2837dfce1b744ad5546919b993c%40%3Cissues.karaf.apache.org%3E
lists.apache.org / thread.html/r4fe6b5ff1d48e23337304fd5ac983d89328aecbd1fa198cfc966fbd7%40%3Cdev.geronimo.apache.org%3E
lists.apache.org / thread.html/r653f633aa7b6ccbb8c338dbfcea7a00e4ae9d6f3e064a03cab8dc20d%40%3Cjava-dev.axis.apache.org%3E
lists.apache.org / thread.html/r67747af92035942c9c413bd8394acbb8a1ace5833c0177014c825bc2%40%3Cissues.karaf.apache.org%3E
lists.apache.org / thread.html/r8dc1a0ae0e0cf9d2494b8cbd66562f99331c4cf635e7781850a9b9ba%40%3Cjava-dev.axis.apache.org%3E
lists.apache.org / thread.html/ra10015f6f3c3c88b7d813383554e87c06347fe163487148669189b8e%40%3Cdev.geronimo.apache.org%3E
lists.apache.org / thread.html/ra1fe29f6399b68980f914d8613dee7f67d62a1a97722fe9cd56f4f5f%40%3Cdev.geronimo.apache.org%3E
lists.apache.org / thread.html/rb0e85243d7268f1d7a1edb5e6c7df885dbd300acabaaf4cb0e880518%40%3Cissues.karaf.apache.org%3E
lists.apache.org / thread.html/rdd67ea3e489134f653349fc2cb09828ac8462aa61dd776b505a3297a%40%3Cissues.karaf.apache.org%3E
kb.cert.org / vuls/id/903934
US Government Resource
nruns.com / _downloads/advisory28122011.pdf
ocert.org / advisories/ocert-2011-003.html