ez-ipupdate: Format string vulnerability

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-dns/ez-ipupdate	<= 3.0.11_beta8	>= 3.0.11_beta8-r1	All supported architectures

Related bugreports: #69658

ez-ipupdate contains a format string vulnerability that could lead to execution of arbitrary code.

2. Impact Information

ez-ipupdate is a utility for updating host name information for a large number of dynamic DNS services.

Ulf Harnhammar from the Debian Security Audit Project discovered a format string vulnerability in ez-ipupdate.

An attacker could exploit this to execute arbitrary code with the permissions of the user running ez-ipupdate, which could be the root user.

3. Resolution Information

There is no known workaround at this time.

All ez-ipupdate users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/ez-ipupdate-3.0.11_beta8-r1"

4. References

Updated November 11, 2004

Summary: This is a Gentoo Linux Security Advisory

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