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Vulnerability record · CVE-2005-0337 · published 2 May 2005

CVE-2005-0337: Wietse venema postfix vulnerability

Wietse Venema · Postfix

Postfix 2.1.3, when /proc/net/if_inet6 is not available and permit_mx_backup is enabled in smtpd_recipient_restrictions, allows remote attackers to bypass e-mail restrictions and perform mail relaying by sending mail to an IPv6 hostname.

7.5 CVSS 2.0 High EPSS 2.8% · top 14.0%
7.5CVSS 2.0 base score
2.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
14References
16 Jun 2026Last modified by NVD

Description

Postfix 2.1.3, when /proc/net/if_inet6 is not available and permit_mx_backup is enabled in smtpd_recipient_restrictions, allows remote attackers to bypass e-mail restrictions and perform mail relaying by sending mail to an IPv6 hostname.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=267837 Vendor Advisory
http://marc.info/?l=bugtraq&m=110763358832637&w=2
http://secunia.com/advisories/14137/ Patch
http://www.redhat.com/support/errata/RHSA-2005-152.html
http://www.securityfocus.com/bid/12445 Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/19218
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11339
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=267837 Vendor Advisory
http://marc.info/?l=bugtraq&m=110763358832637&w=2
http://secunia.com/advisories/14137/ Patch
http://www.redhat.com/support/errata/RHSA-2005-152.html
http://www.securityfocus.com/bid/12445 Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/19218
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11339

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Source: NIST National Vulnerability Database (record CVE-2005-0337), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.