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Red Hat: RHSA-2008:0839-01 Moderate: Postfix Local Exploit Risk

red hat
Calendar Grey August 14, 2008
Dist Redhat Esm H88
Red Hat Security Advisory Synopsis: Moderate: postfix security update Advisory ID: RHSA-2008:0839-01
Updated postfix packages that fix a security issue are now available for Red Hat Enterprise Linux 3, 4, and 5

Solution

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at

Summary

Postfix is a Mail Transport Agent (MTA), supporting LDAP, SMTP AUTH (SASL), and TLS.
A flaw was found in the way Postfix dereferences symbolic links. If a local user has write access to a mail spool directory with no root mailbox, it may be possible for them to append arbitrary data to files that root has write permission to. (CVE-2008-2936)
Red Hat would like to thank Sebastian Krahmer for responsibly disclosing this issue.
All users of postfix should upgrade to these updated packages, which contain a backported patch that resolves this issue.

Topics%20covered

Topics Covered

security advisory security update moderate impact local exploitation red hat enterprise linux postfix mail transport agent

References

https://www.cve.org/CVERecord?id=CVE-2008-2936 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux AS version 3:
Source:
i386: postfix-2.0.16-14.1.RHEL3.i386.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.i386.rpm
ia64: postfix-2.0.16-14.1.RHEL3.ia64.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.ia64.rpm
ppc: postfix-2.0.16-14.1.RHEL3.ppc.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.ppc.rpm
s390: postfix-2.0.16-14.1.RHEL3.s390.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.s390.rpm
s390x: postfix-2.0.16-14.1.RHEL3.s390x.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.s390x.rpm
x86_64: postfix-2.0.16-14.1.RHEL3.x86_64.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.x86_64.rpm
Red Hat Desktop version 3:
Source:
i386: postfix-2.0.16-14.1.RHEL3.i386.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.i386.rpm
x86_64: postfix-2.0.16-14.1.RHEL3.x86_64.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.x86_64.rpm
Red Hat Enterprise Linux ES version 3:
Source:
i386: postfix-2.0.16-14.1.RHEL3.i386.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.i386.rpm
ia64: postfix-2.0.16-14.1.RHEL3.ia64.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.ia64.rpm
x86_64: postfix-2.0.16-14.1.RHEL3.x86_64.rpm postfix-debuginfo-2.0.16-14.1.RHEL3.x86_64.rpm
Red Hat Enterprise Linux WS version 3:
Source:
i386: postfix-2.0.16-14.1.RHEL3.i386.rpm

Read the Full Advisory


Advisory ID: RHSA-2008:0839-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2008:0839.html
Issue date: 2008-08-14

Topic

Updated postfix packages that fix a security issue are now available for Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Topics%20covered

Topics Covered

security advisory security update moderate impact local exploitation red hat enterprise linux postfix mail transport agent

Relevant Releases Architectures

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Desktop version 3 - i386, x86_64

Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Bugs Fixed

456314 - CVE-2008-2936 postfix privilege escalation flaw

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