The SUSE Security Team has published
an article detailing several security
issues it has uncovered with GNU Screen. This includes
a local root exploit when Screen is shipped setuid-root, as it is in
some Linux and BSD distributions. The security team also reports problems
in coordinating disclosure with the upstream Screen project.

We are not satisfied with how this coordinated disclosure developed,
and we will try to be more attentive to such problematic situations
early on in the future. This experience also sheds light on the
overall situation of Screen upstream. It looks like it suffers from a
lack of manpower and expertise, which is worrying for such a
widespread open source utility. We hope this publication can help to
draw attention to this and to improve this situation in the future.

The article includes a table
of operating systems, screen versions, and which vulnerabilities they
may be affected by.

https://lwn.net/Articles/1020901/
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