[USN-4176-1] GNU cpio vulnerability

Leonidas S. Barbosa leo.barbosa at canonical.com
Wed Nov 6 17:49:17 UTC 2019

Ubuntu Security Notice USN-4176-1
November 06, 2019

cpio vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM


GNU cpio could be made to expose sensitive information if it received
a specially crafted input.

Software Description:
- cpio: a tool to manage archives of files


Thomas Habets discovered that GNU cpio incorrectly handled certain inputs.
An attacker could possibly use this issue to access sensitive information.

Update instructions:

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

Ubuntu 19.10:
  cpio                            2.12+dfsg-9ubuntu0.1

Ubuntu 19.04:
  cpio                            2.12+dfsg-6ubuntu0.19.04.1

Ubuntu 18.04 LTS:
  cpio                            2.12+dfsg-6ubuntu0.18.04.1

Ubuntu 16.04 LTS:
  cpio                            2.11+dfsg-5ubuntu1.1

Ubuntu 14.04 ESM:
  cpio                            2.11+dfsg-1ubuntu1.2+esm1

Ubuntu 12.04 ESM:
  cpio                            2.11-7ubuntu3.3

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


Package Information:
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