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AUSCERT External Security Bulletin Redistribution
ESB-2019.3826
USN-4154-1: Sudo vulnerability
15 October 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: sudo
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Root Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-14287
Original Bulletin:
https://usn.ubuntu.com/4154-1/
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running sudo check for an updated version of the software for their
operating system.
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USN-4154-1: Sudo vulnerability
14 October 2019
sudo vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
o Ubuntu 14.04 ESM
o Ubuntu 12.04 ESM
Summary
Sudo could be made to run commands as root if it called with a specially
crafted user ID.
Software Description
o sudo - Provide limited super user privileges to specific users
Details
Joe Vennix discovered that Sudo incorrectly handled certain user IDs. An
attacker could potentially exploit this to execute arbitrary commands as the
root user.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.04
sudo - 1.8.27-1ubuntu1.1
sudo-ldap - 1.8.27-1ubuntu1.1
Ubuntu 18.04 LTS
sudo - 1.8.21p2-3ubuntu1.1
sudo-ldap - 1.8.21p2-3ubuntu1.1
Ubuntu 16.04 LTS
sudo - 1.8.16-0ubuntu1.8
sudo-ldap - 1.8.16-0ubuntu1.8
Ubuntu 14.04 ESM
sudo - 1.8.9p5-1ubuntu1.5+esm2
sudo-ldap - 1.8.9p5-1ubuntu1.5+esm2
Ubuntu 12.04 ESM
sudo - 1.8.3p1-1ubuntu3.8
sudo-ldap - 1.8.3p1-1ubuntu3.8
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-2019-14287
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