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Net::Server: Format string vulnerability

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200608-18 / net-server
Release Date August 10, 2006
Latest Revision August 10, 2006: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-perl/net-server < 0.88 >= 0.88 All supported architectures

Related bugreports: #142386

Synopsis

A format string vulnerability has been reported in Net::Server which can be exploited to cause a Denial of Service.

2.  Impact Information

Background

Net::Server is an extensible, generic Perl server engine. It is used by several Perl applications like Postgrey.

Description

The log function of Net::Server does not handle format string specifiers properly before they are sent to syslog.

Impact

By sending a specially crafted datastream to an application using Net::Server, an attacker could cause a Denial of Service.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Net::Server should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-perl/net-server-0.88"

4.  References



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Page updated August 10, 2006

Summary: This is a Gentoo Linux Security Advisory

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