Screenie: Insecure temporary file usage

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-misc/screenie	< 1.30.0-r1	>= 1.30.0-r1	All supported architectures

Related bugreports: #250476

An insecure temporary file usage has been reported in Screenie, allowing for symlink attacks.

2. Impact Information

Screenie is a small screen frontend that is designed to be a session handler.

Dmitry E. Oboukhov reported that Screenie does not handle "/tmp/.screenie.#####" temporary files securely.

A local attacker could perform symlink attacks to overwrite arbitrary files with the privileges of the user running the application.

3. Resolution Information

There is no known workaround at this time.

All Screenie users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-misc/screenie-1.30.0-r1"

4. References

Page updated September 09, 2009

Summary: This is a Gentoo Linux Security Advisory

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