Ubuntu Security Notice 3907-1 - It was discovered that WALinuxAgent created swap files with incorrect permissions. A local attacker could possibly use this issue to obtain sensitive information from the swap file.
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Ubuntu Security Notice USN-3907-1
March 12, 2019
walinuxagent vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
WALinuxAgent could be made to expose sensitive information.
Software Description:
- walinuxagent: Windows Azure Linux Agent
Details:
It was discovered that WALinuxAgent created swap files with incorrect
permissions. A local attacker could possibly use this issue to obtain
sensitive information from the swap file.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.10:
walinuxagent 2.2.32-0ubuntu1~18.10.2
Ubuntu 18.04 LTS:
walinuxagent 2.2.32-0ubuntu1~18.04.2
Ubuntu 16.04 LTS:
walinuxagent 2.2.32-0ubuntu1~16.04.2
Ubuntu 14.04 LTS:
walinuxagent 2.2.32-0ubuntu1~14.04.2
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3907-1
CVE-2019-0804
Package Information:
https://launchpad.net/ubuntu/+source/walinuxagent/2.2.32-0ubuntu1~18.10.2
https://launchpad.net/ubuntu/+source/walinuxagent/2.2.32-0ubuntu1~18.04.2
https://launchpad.net/ubuntu/+source/walinuxagent/2.2.32-0ubuntu1~16.04.2
https://launchpad.net/ubuntu/+source/walinuxagent/2.2.32-0ubuntu1~14.04.2