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Gentoo: Postfix Local privilege escalation

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Special Forums Cybersecurity Security Advisories (RSS) Gentoo: Postfix Local privilege escalation
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Old 08-15-2008
Gentoo: Postfix Local privilege escalation
LinuxSecurity.com: Sebastian Krahmer of SuSE has found that Postfix allows to deliver mail to root-owned symlinks in an insecure manner under certain conditions. Normally, Postfix does not deliver mail to symlinks, except to root-owned symlinks, for compatibility with the systems using symlinks in /dev like Solaris. Furthermore, some systems like Linux allow to hardlink a symlink, while the POSIX.1-2001 standard requires that the symlink is followed.

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LEARN ABOUT CENTOS

pmdapostfix

PMDAPOSTFIX(1)						       Performance Co-Pilot						    PMDAPOSTFIX(1)

NAME

       pmdapostfix - Postfix performance metrics domain agent (PMDA)

DESCRIPTION

       pmdapostfix is a Performance Metrics Domain Agent (PMDA) which exports mail queue sizes as reported by qshape(1), as well as aggregate
       statistics collected from mail.log.

INSTALLATION

       If you want access to the names and values for the Postfix performance metrics, do the following as root:

	   # cd $PCP_PMDAS_DIR/postfix
	   # ./Install

       If you want to undo the installation, do the following as root:

	   # cd $PCP_PMDAS_DIR/postfix
	   # ./Remove

       pmdapostfix is launched by pmcd(1) and should never be executed directly.  The Install and Remove scripts notify pmcd(1) when the agent is
       installed or removed.

FILES

       $PCP_PMDAS_DIR/postfix/Install
	   installation script for the pmdapostfix agent

       $PCP_PMDAS_DIR/postfix/Remove
	   undo installation script for the pmdapostfix agent

       $PCP_LOG_DIR/pmcd/postfix.log
	   default log file for error messages from pmdapostfix

SEE ALSO

       pmcd(1) and qshape(1).

3.8.10							       Performance Co-Pilot						    PMDAPOSTFIX(1)