[USN-4624-1] libexif vulnerability

Leonidas S. Barbosa leo.barbosa at canonical.com
Tue Nov 10 13:40:30 UTC 2020

Ubuntu Security Notice USN-4624-1
November 10, 2020

libexif vulnerability

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

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM


libexif could be made to execute arbitrary code if it received a specially
crafted input.

Software Description:
- libexif: library to parse EXIF files


It was discovered that libexif incorrectly handled certain inputs.
An attacker could possibly use this issue to cause unexpected behaviours,
or execute arbitrary code.

Update instructions:

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

Ubuntu 20.10:
  libexif12                       0.6.22-2ubuntu0.1

Ubuntu 20.04 LTS:
  libexif12                       0.6.21-6ubuntu0.4

Ubuntu 18.04 LTS:
  libexif12                       0.6.21-4ubuntu0.6

Ubuntu 16.04 LTS:
  libexif12                       0.6.21-2ubuntu0.6

Ubuntu 14.04 ESM:
  libexif12                       0.6.21-1ubuntu1+esm6

Ubuntu 12.04 ESM:
  libexif12                       0.6.20-2ubuntu0.7

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


Package Information:
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