GLSA 201709-20: Postfix: Privilege escalation
| Severity: | high |
| Title: | Postfix: Privilege escalation |
| Date: | 09/24/2017 |
| Bugs: | |
| ID: | 201709-20 |
Synopsis
A vulnerability in Postfix may allow local users to gain root privileges.Background
Postfix is a mail server and an alternative to the widely-used Sendmail program.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| mail-mta/postfix | < 3.1.6 | >= 3.1.6 | All supported architectures |
Description
By default, Berkeley DB reads a DB_CONFIG configuration file from the current working directory. This is an undocumented behavior.
Impact
A local attacker, by using a specially crafted DG_CONFIG file, could possibly escalate privileges to the root group.
Workaround
There is no known workaround at this time.
Resolution
All Postfix users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-mta/postfix-3.1.6"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.