[USN-4143-1] SDL 2.0 vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-4143-1
September 30, 2019

SDL 2.0 vulnerabilities
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

SDL 2.0 could be made to crash or run programs as your login if it
opened a specially crafted file.

Software Description:
- libsdl2: Simple DirectMedia Layer: cross-platform development library
providing access to low level media interfaces

Details:

It was discovered that SDL 2.0 mishandled crafted image files resulting in an
integer overflow. If a user were tricked into opening a malicious file, SDL
2.0 could be caused to crash or potentially run arbitrary code.
(CVE-2017-2888)

It was discovered that SDL 2.0 mishandled crafted image files. If a user were
tricked into opening a malicious file, SDL 2.0 could be caused to crash or
potentially run arbitrary code.
(CVE-2019-7635, CVE-2019-7636, CVE-2019-7637, CVE-2019-7638)

Update instructions:

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

Ubuntu 19.04:
libsdl2-2.0-0 2.0.9+dfsg1-1ubuntu1.19.04.1

Ubuntu 18.04 LTS:
libsdl2-2.0-0 2.0.8+dfsg1-1ubuntu1.18.04.4

Ubuntu 16.04 LTS:
libsdl2-2.0-0 2.0.4+dfsg1-2ubuntu2.16.04.2

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

References:
https://usn.ubuntu.com/4143-1
CVE-2017-2888, CVE-2019-7635, CVE-2019-7636, CVE-2019-7637,
CVE-2019-7638

Package Information:
https://launchpad.net/ubuntu/+source/libsdl2/2.0.9+dfsg1-1ubuntu1.19.04.1
https://launchpad.net/ubuntu/+source/libsdl2/2.0.8+dfsg1-1ubuntu1.18.04.4
https://launchpad.net/ubuntu/+source/libsdl2/2.0.4+dfsg1-2ubuntu2.16.04.2