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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | squirrelmail | 1.4.8-5.el5_7.13 | RHSA-2012:0103 |
| RHEL 4 | squirrelmail | 1.4.8-18.el4 | RHSA-2012:0103 |
Advisories 1
- RHSA-2012:0103 Red Hat Security Advisory: squirrelmail security update Red Hat Security Advisories (RHSA) · Jan 29, 2026
References
- FEDORA-2010-10264 vendor-advisory
- 40291 vdb-entry
- MDVSA-2010:120 vendor-advisory
- 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
- 40307 vdb-entry
- ADV-2010-1535 vdb-entry
- ADV-2010-1554 vdb-entry
- APPLE-SA-2012-02-01-1 vendor-advisory
- [oss-security] 20100525 Re: CVE Request for Horde and Squirrelmail mailing-list
- http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail/branches/SM-1_4-STABLE/squirrelmail/plugins/mail_fetch/functions.php?r1=13951&r2=13950&pathrev=13951
- [oss-security] 20100525 Re: CVE Request for Horde and Squirrelmail mailing-list
- http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail/branches/SM-1_4-STABLE/squirrelmail/plugins/mail_fetch/options.php?r1=13951&r2=13950&pathrev=13951
- ADV-2010-1536 vdb-entry
- FEDORA-2010-10259 vendor-advisory
- [oss-security] 20100621 Re: [SquirrelMail-Security] CVE Request for Horde and Squirrelmail mailing-list
- RHSA-2012:0103 vendor-advisory
- 40307 third-party-advisory
- http://squirrelmail.org/security/issue/2010-06-21
- FEDORA-2010-10244 vendor-advisory