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AUSCERT External Security Bulletin Redistribution
22 August 2018
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Existing Account
CVE Names: CVE-2018-6557
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Ubuntu Security Notice USN-3748-1
August 21, 2018
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 18.04 LTS
base-files could be made to hang or overwrite files as the administrator.
- - base-files: Debian base system miscellaneous files
Sander Bos discovered that the MOTD update script incorrectly handled
temporary files. A local attacker could use this issue to cause a denial of
service, or possibly escalate privileges if kernel symlink restrictions
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS:
In general, a standard system update will make all the necessary changes.
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