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AUSCERT External Security Bulletin Redistribution
ESB-2019.1929
USN-3996-1: GNU Screen vulnerability
30 May 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: screen
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2015-6806
Reference: ESB-2019.1882
ESB-2015.2322
Original Bulletin:
https://usn.ubuntu.com/3996-1/
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USN-3996-1: GNU Screen vulnerability
29 May 2019
GNU Screen vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
o 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
o 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.
References
o CVE-2015-6806
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