=========================================================================
Ubuntu Security Notice USN-4941-1
May 10, 2021

exiv2 vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in Exiv2.

Software Description:
- exiv2: EXIF/IPTC/XMP metadata manipulation tool

Details:

It was discovered that Exiv2 incorrectly handled certain images.
An attacker could possibly use this issue to execute arbitrary code or cause
a crash. (CVE-2021-29457)

It was discovered that Exiv2 incorrectly handled certain images.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2021-29458, CVE-2021-29470)

It was discovered that Exiv2 incorrectly handled certain images.
An attacker could possibly use this issue to execute arbitrary code or
cause a crash. (CVE-2021-3482)

Update instructions:

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

Ubuntu 21.04:
  libexiv2-27                     0.27.3-3ubuntu1.1

Ubuntu 20.10:
  libexiv2-27                     0.27.3-3ubuntu0.2

Ubuntu 20.04 LTS:
  libexiv2-27                     0.27.2-8ubuntu2.2

Ubuntu 18.04 LTS:
  libexiv2-14                     0.25-3.1ubuntu0.18.04.7

Ubuntu 16.04 ESM:
  libexiv2-14                     0.25-2.1ubuntu16.04.7+esm1

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

References:
  https://ubuntu.com/security/notices/USN-4941-1
  CVE-2021-29457, CVE-2021-29458, CVE-2021-29470, CVE-2021-3482

Package Information:
  https://launchpad.net/ubuntu/+source/exiv2/0.27.3-3ubuntu1.1
  https://launchpad.net/ubuntu/+source/exiv2/0.27.3-3ubuntu0.2
  https://launchpad.net/ubuntu/+source/exiv2/0.27.2-8ubuntu2.2
  https://launchpad.net/ubuntu/+source/exiv2/0.25-3.1ubuntu0.18.04.7