Ubuntu alert USN-4358-1 (libexif)

From:
             
 
"Leonidas S. Barbosa" <leo.barbosa@canonical.com> 
To:
             
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
             
 
[USN-4358-1] libexif vulnerabilities 
Date:
             
 
Wed, 13 May 2020 15:46:54 -0300
Message-ID:
             
 
<20200513184654.GB2112903@d4rkl41n>
==========================================================================
Ubuntu Security Notice USN-4358-1
May 13, 2020

libexif vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in libexif.

Software Description:
- libexif: library to parse EXIF files

Details:

It was discovered that libexif incorrectly handled certain tags.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2018-20030)

It was discovered that libexif incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a crash.
(CVE-2020-12767)

Update instructions:

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

Ubuntu 20.04 LTS:
  libexif12                       0.6.21-6ubuntu0.1

Ubuntu 19.10:
  libexif12                       0.6.21-5.1ubuntu0.2

Ubuntu 18.04 LTS:
  libexif12                       0.6.21-4ubuntu0.2

Ubuntu 16.04 LTS:
  libexif12                       0.6.21-2ubuntu0.2

Ubuntu 14.04 ESM:
  libexif12                       0.6.21-1ubuntu1+esm2

Ubuntu 12.04 ESM:
  libexif12                       0.6.20-2ubuntu0.3

After a standard system update you need to restart your session to
effect the necessary changes.

References:
  https://usn.ubuntu.com/4358-1
  CVE-2018-20030, CVE-2020-12767

Package Information:
  https://launchpad.net/ubuntu/+source/libexif/0.6.21-6ubun...
  https://launchpad.net/ubuntu/+source/libexif/0.6.21-5.1ub...
  https://launchpad.net/ubuntu/+source/libexif/0.6.21-4ubun...
  https://launchpad.net/ubuntu/+source/libexif/0.6.21-2ubun...
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