USN-3911-2: file regression

Releases

• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• file - Tool to determine file types

Details

USN-3911-1 fixed vulnerabilities in file. One of the backported security
fixes introduced a regression that caused the interpreter string to be
truncated. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that file incorrectly handled certain malformed ELF
files. An attacker could use this issue to cause a denial of service, or
possibly execute arbitrary code.

Update instructions

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

Ubuntu 18.04

• file - 1:5.32-2ubuntu0.4
• libmagic1 - 1:5.32-2ubuntu0.4

Ubuntu 16.04

• file - 1:5.25-2ubuntu1.4
• libmagic1 - 1:5.25-2ubuntu1.4

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

References

• https://launchpad.net/bugs/1835596