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CVE-2011-5035

75
FAUCET Score

CVE-2011-5035 describes a denial-of-service vulnerability in Oracle Glassfish versions 2.1.1, 3.0.1, and 3.1.1, as well as related Oracle products like Communications Server and Sun Java System Application Server. The flaw allows remote attackers to consume excessive CPU resources by sending specially crafted form parameters that trigger predictable hash collisions. With a CVSS score of 5.0 (medium severity), this vulnerability is easily exploitable over the network with low attack complexity, leading to a denial of service without requiring authentication. While not listed in CISA's KEV catalog, a Metasploit module exists for hash table collisions, and it has garnered some community discussion and media coverage, indicating awareness of the issue.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.1CPE matchmatch criteria
cpe:2.3:a:oracle:glassfish_server:*:*:*:*:*:*:*:*
2.1.1CPE matchmatch criteria
cpe:2.3:a:oracle:glassfish_server:2.1.1:*:*:*:*:*:*:*
3.0.1CPE matchmatch criteria
cpe:2.3:a:oracle:glassfish_server:3.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
68.91%
Probability of exploitation in next 30 days
EPSS Percentile
99.3%
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 0.6891 is in the 100th percentile among its peer group of 23,684 CVEs.

Social Chatter

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

Media Mentions

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

Remediation

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: java-1.6.0-openjdk-1:1.6.0.0-1.25.1.10.6.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: java-1.6.0-openjdk-1:1.6.0.0-1.43.1.10.6.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Network Satellite Server v 5.4Fixed in: java-1.6.0-ibm-1:1.6.0.14.0-1jpp.1.el6_4
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-sun-1:1.6.0.31-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-ibm-1:1.6.0.10.1-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 6Fixed in: java-1.6.0-sun-1:1.6.0.31-1jpp.1.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 6Fixed in: java-1.6.0-ibm-1:1.6.0.10.1-1jpp.5.el6_2
View patch

Vendor Advisories (1)

redhatCVE-2011-5035Moderate

GlassFish: hash table collisions CPU usage DoS (oCERT-2011-003)

Dec 28, 2011

References

archives.neohapsis.com / archives/bugtraq/2011-12/0181.html
lists.opensuse.org / opensuse-security-announce/2012-05/msg00010.html
marc.info
marc.info
marc.info
marc.info
marc.info
rhn.redhat.com / errata/RHSA-2012-0514.html
rhn.redhat.com / errata/RHSA-2013-1455.html
secunia.com / advisories/48073
secunia.com / advisories/48074
secunia.com / advisories/48589
secunia.com / advisories/48950
secunia.com / advisories/57126
security.gentoo.org / glsa/glsa-201406-32.xml
github.com / FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16908
debian.org / security/2012/dsa-2420
kb.cert.org / vuls/id/903934
US Government Resource
mandriva.com / security/advisories
nruns.com / _downloads/advisory28122011.pdf
ocert.org / advisories/ocert-2011-003.html
oracle.com / technetwork/topics/security/cpuapr2012-366314.html
oracle.com / technetwork/topics/security/cpujan2012-366304.html
oracle.com / technetwork/topics/security/cpujan2013-1515902.html