USN-3996-1: GNU Screen vulnerability
GNU Screen vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM
Summary
GNU Screen could be made to crash or run programs as your login if it
opened a specially crafted file or received specially crafted input.
Software Description
- screen – terminal multiplexer with VT100/ANSI terminal emulation
Details
Kuang-che Wu discovered that GNU Screen improperly handled certain input. An
attacker could use this issue to cause GNU Screen to crash, resulting in a
denial of service or the execution of arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 14.04 ESM
- screen – 4.1.0~20120320gitdb59704-9ubuntu0.1~esm1
- Ubuntu 12.04 ESM
- screen – 4.0.3-14ubuntu8.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
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