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GLSA
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Joined: 12 May 2004
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PostPosted: Sun Sep 24, 2017 9:26 pm    Post subject: [ GLSA 201709-20 ] Postfix Reply with quote

Gentoo Linux Security Advisory

Title: Postfix: Privilege escalation (GLSA 201709-20)
Severity: high
Exploitable: local
Date: 2017-09-24
Bug(s): #621882
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: mail-mta/postfix
Vulnerable: < 3.1.6
Unaffected: >= 3.1.6
Architectures: 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:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=mail-mta/postfix-3.1.6"
   


References

Postfix
Official Announce


Last edited by GLSA on Fri Sep 29, 2017 4:17 am; edited 1 time in total
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