Description
The class file parser in IBM Java before 1.4.2 SR13 FP9, as used in IBM Runtimes for Java Technology 5.0.0 before SR13 and 6.0.0 before SR10, allows remote authenticated users to cause a denial of service (JVM segmentation fault, and possibly memory consumption or an infinite loop) via a crafted attribute length field in a class file, which triggers a buffer over-read.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | java-1.4.2-ibm +6 | 1.4.2.13.10-1jpp.1.el5 | RHSA-2011:1159 |
| RHEL 5 | java-1.4.2-ibm-sap +4 | 1.4.2.13.10.sap-1jpp.1.el5 | RHSA-2011:1265 |
| RHEL 4 | java-1.4.2-ibm +6 | 1.4.2.13.10-1jpp.1.el4 | RHSA-2011:1159 |
| RHEL 4 | java-1.4.2-ibm-sap +4 | 1.4.2.13.10.sap-1jpp.1.el4_8 | RHSA-2011:1265 |
Advisories 2
- RHSA-2011:1265 Red Hat Security Advisory: java-1.4.2-ibm-sap security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2011:1159 Red Hat Security Advisory: java-1.4.2-ibm security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
References
- SUSE-SU-2011:0823 vendor-advisory
- IZ89602 vendor-advisory
- RHSA-2011:1159 vendor-advisory
- ibm-rjt-classfile-dos(65189) vdb-entry
- IZ89620 vendor-advisory
- PM42551 vendor-advisory
- SUSE-SA:2011:024 vendor-advisory
- RHSA-2011:1265 vendor-advisory