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Fencer Intel
medium 4.3

CVE-2012-4529 json

The org.apache.catalina.connector.Response.encodeURL method in Red Hat JBoss Web 7.1.x and earlier, when the tracking mode is set to COOKIE…

published 2013-10-28 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4457

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

The org.apache.catalina.connector.Response.encodeURL method in Red Hat JBoss Web 7.1.x and earlier, when the tracking mode is set to COOKIE, sends the jsessionid in the URL of the first response of a session, which allows remote attackers to obtain the session id (1) via a man-in-the-middle attack or (2) by reading a log.

Patch / fix

  • ecj3 jboss enterprise application platform 6 1:3.7.2-6.redhat_1.ep6.el5
  • dom4j jboss enterprise application platform 6 1.6.1-19.redhat_5.ep6.el5
  • guava jboss enterprise application platform 6 13.0.1-1.redhat_1.ep6.el5.1
  • httpd jboss enterprise application platform 6 2.2.22-19.ep6.el5
  • jansi jboss enterprise application platform 6 1.9-2.redhat_1.ep6.el5
  • netty jboss enterprise application platform 6 3.6.2-1_redhat_1.1.ep6.el5
  • slf4j jboss enterprise application platform 6 1.7.2-10.redhat_1.ep6.el5
  • wss4j jboss enterprise application platform 6 1.6.9-2.redhat_2.ep6.el5

red hat advisories RHSA-2013:0839RHSA-2013:0834

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-4529 updated cvss 4.3

Web: jsessionid exposed via encoded url when using cookie based session tracking

  • Red Hat JBoss Portal 6 jbossweb jbossweb
    affected: no fix available
  • Red Hat JBoss Enterprise Application Platform 6 for RHEL 5 Server httpd 2.2.22-19.ep6.el5, mod_ssl 2.2.22-19.ep6.el5, jansi 1.9-2.redhat_1.ep6.el5, atinject 1-9.redhat_3.ep6.el5, ecj3 3.7.2-6.redhat_1.ep6.el5, httpd-tools 2.2.22-19.ep6.el5, +189 more
    fixed: vendor fix RHSA-2013:0839
  • Red Hat JBoss Enterprise Application Platform 6 for RHEL 6 Server httpd 2.2.22-18.ep6.el6, mod_ssl 2.2.22-18.ep6.el6, jansi 1.9-2.redhat_1.ep6.el6, atinject 1-9.redhat_3.ep6.el6, ecj3 3.7.2-6.redhat_1.ep6.el6, httpd-tools 2.2.22-18.ep6.el6, +189 more
    fixed: vendor fix RHSA-2013:0834
  • Red Hat JBoss Enterprise Application Platform 6.1
    fixed: vendor fix RHSA-2013:0833
  • Red Hat JBoss Portal Platform 6.1
    fixed: vendor fix RHSA-2013:1437
  • Red Hat Enterprise Linux 5 tomcat5 Red Hat Enterprise Linux 6 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat6-el-2.1-api, +4 more Red Hat JBoss BRMS 5 jbossweb jbossweb Red Hat JBoss Enterprise Web Server 1 tomcat6, tomcat5 tomcat5 Red Hat JBoss Portal 5 jbossweb jbossweb Red Hat JBoss SOA Platform 5 jbossweb jbossweb
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.98% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.