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Vulnerability Intelligence

CVE-2011-5035

MediumPublic exploit

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

Published Dec 28, 2011 · Updated Mar 9, 2026

Key Facts

Patch immediately
  • CVE-2011-5035 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Glassfish Server (Oracle), openjdk-6 (debian), java-1.6.0-openjdk-demo (amazon) and 15 more products.
  • It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
  • EPSS estimates a 68% probability of exploitation in the next 30 days.
  • Fixed versions are available, including java 1.6.0-ibm-1:1.6.0.10.1-1jpp.1.el5, java 1.6.0-ibm-1:1.6.0.10.1-1jpp.5.el6_2, java-1_7_0-openjdk 1.7.0.121-1.1.
  • Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

5.0

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

EPSS (30-day exploit likelihood)

68%

Higher than 99.3% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2011-5035 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Oracle Glassfish 2.1.1, 3.0.1, and 3.1.1, as used in Communications Server 2.0, Sun Java System Application Server 8.1 and 8.2, and possibly other products, computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters, aka Oracle security ticket S0104869.

Affected Products

31 affected entries in total
ProductAffected versionsFixed in
Glassfish ServerOracle2.1.1, 3.0.13.1.1
openjdk-6debianSee advisory6b18-1.8.13-0+squeeze1
java-1.6.0-openjdk-demoamazonSee advisory1:1.6.0.0-52.1.10.6.41.amzn1
java-1.6.0-openjdk-develamazonSee advisory1:1.6.0.0-52.1.10.6.41.amzn1
java-1.6.0-openjdkamazonSee advisory1:1.6.0.0-52.1.10.6.41.amzn1
13 more affected products in the full CVE brief

Patched Releases

java

1.6.0-ibm-1:1.6.0.10.1-1jpp.1.el5, 1.6.0-ibm-1:1.6.0.10.1-1jpp.5.el6_2

java-1_7_0-openjdk

1.7.0.121-1.1

java-1_7_0-openjdk-accessibility

1.7.0.121-1.1

java-1_7_0-openjdk-bootstrap

1.7.0.121-1.1

java-1_7_0-openjdk-bootstrap-devel

1.7.0.121-1.1

java-1_7_0-openjdk-bootstrap-headless

1.7.0.121-1.1

java-1_7_0-openjdk-demo

1.7.0.121-1.1

java-1_7_0-openjdk-devel

1.7.0.121-1.1

java-1_7_0-openjdk-headless

1.7.0.121-1.1

java-1_7_0-openjdk-javadoc

1.7.0.121-1.1

java-1_7_0-openjdk-src

1.7.0.121-1.1

java-1.6.0-openjdk

1:1.6.0.0-1.25.1.10.6.0.1.el5_8, 1:1.6.0.0-1.43.1.10.6.el6_2, 1:1.6.0.0-52.1.10.6.41.amzn1

java-1.6.0-openjdk-demo

1:1.6.0.0-1.25.1.10.6.0.1.el5_8, 1:1.6.0.0-1.43.1.10.6.el6_2, 1:1.6.0.0-52.1.10.6.41.amzn1

java-1.6.0-openjdk-devel

1:1.6.0.0-1.25.1.10.6.0.1.el5_8, 1:1.6.0.0-1.43.1.10.6.el6_2, 1:1.6.0.0-52.1.10.6.41.amzn1

java-1.6.0-openjdk-javadoc

1:1.6.0.0-1.25.1.10.6.0.1.el5_8, 1:1.6.0.0-1.43.1.10.6.el6_2, 1:1.6.0.0-52.1.10.6.41.amzn1

java-1.6.0-openjdk-src

1:1.6.0.0-1.25.1.10.6.0.1.el5_8, 1:1.6.0.0-1.43.1.10.6.el6_2, 1:1.6.0.0-52.1.10.6.41.amzn1

openjdk-6

6b18-1.8.13-0+squeeze1

Glassfish Server

3.1.1

Timeline

  1. Publicly disclosed

    Dec 28, 2011

  2. Last updated

    Mar 9, 2026

Weakness Type

  • CWE-20 Improper Input Validation

References

15 more references in the full CVE brief

FAQ

Common Questions.

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