Claws Mail: Insecure temporary file creation

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
mail-client/claws-mail	< 3.0.2-r1	>= 3.0.2-r1	All supported architectures

Related bugreports: #201244

Claws Mail uses temporary files in an insecure manner, allowing for a symlink attack.

2. Impact Information

Claws Mail is a GTK based e-mail client.

Nico Golde from Debian reported that the sylprint.pl script that is part of the Claws Mail tools creates temporary files in an insecure manner.

A local attacker could exploit this vulnerability to conduct symlink attacks to overwrite files with the privileges of the user running Claws Mail.

3. Resolution Information

There is no known workaround at this time.

All Claws Mail users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/claws-mail-3.0.2-r1"

4. References

Page updated January 09, 2008

Summary: This is a Gentoo Linux Security Advisory

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