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USN-4820-1: S-nail vulnerability

15 March 2021

S-nail could be made to overwrite files as the administrator.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Releases

Packages

  • s-nail - feature-rich BSD mail(1)

Details

It was discovered that S-nail incorrectly handled paths. An attacker could
possible use this issue to write arbitrary files and escalate privileges.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04

In general, a standard system update will make all the necessary changes.

References