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AUSCERT External Security Bulletin Redistribution
ESB-2019.0921
USN-3913-1: P7ZIP vulnerabilities
22 March 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: p7zip
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-17969 CVE-2016-2335
Reference: ESB-2018.1054
ESB-2018.0350
ESB-2018.0349
ASB-2016.0056
ESB-2016.1450
Original Bulletin:
https://usn.ubuntu.com/3913-1/
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USN-3913-1: P7ZIP vulnerabilities
21 March 2019
p7zip vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 16.04 LTS
Summary
p7zip could be made to crash or run programs as your login if it opened a
specially crafted file.
Software Description
o p7zip - 7z file archiver with high compression ratio
Details
It was discovered that p7zip did not correctly handle certain malformed
archives. If a user or automated system were tricked into processing a
specially crafted archive with p7zip, then p7zip could be made to crash,
possibly leading to abitrary code execution.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 16.04 LTS
p7zip - 9.20.1~dfsg.1-4.2ubuntu0.1
p7zip-full - 9.20.1~dfsg.1-4.2ubuntu0.1
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-2016-2335
o CVE-2017-17969
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