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AUSCERT External Security Bulletin Redistribution
ESB-2017.2216
GD library vulnerability
6 September 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: GD Graphics Library
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-6362
Reference: ESB-2017.2200
Original Bulletin:
http://www.ubuntu.com/usn/usn-3410-1
http://www.ubuntu.com/usn/usn-3410-2
Comment: This bulletin contains two (2) Ubuntu security advisories.
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Ubuntu Security Notice USN-3410-1
September 05, 2017
libgd2 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
GD library could be made to crash if it opened a specially crafted
file.
Software Description:
- - libgd2: GD Graphics Library
Details:
It was discovered a double-free vulnerability in GD library.
A remote attacker could write arbitrary values in memory
spaces or made programs to crash.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
 libgd-tools 2.2.4-2ubuntu0.3
 libgd3 2.2.4-2ubuntu0.3
Ubuntu 16.04 LTS:
 libgd-tools 2.1.1-4ubuntu0.16.04.8
 libgd3 2.1.1-4ubuntu0.16.04.8
Ubuntu 14.04 LTS:
 libgd-tools 2.1.0-3ubuntu0.8
 libgd3 2.1.0-3ubuntu0.8
In general, a standard system update will make all the necessary
changes.
References:
 https://www.ubuntu.com/usn/usn-3410-1
 CVE-2017-6362
Package Information:
 https://launchpad.net/ubuntu/+source/libgd2/2.2.4-2ubuntu0.3
 https://launchpad.net/ubuntu/+source/libgd2/2.1.1-4ubuntu0.16.04.8
 https://launchpad.net/ubuntu/+source/libgd2/2.1.0-3ubuntu0.8
==========================================================================
Ubuntu Security Notice USN-3410-2
September 05, 2017
libgd2 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 ESM
Summary:
GD library could be made to crash if it opened a specially crafted
file.
Software Description:
- - libgd2: GD Graphics Library
Details:
USN-3410-1 fixed a vulnerability in GD Graphics Library.
This update provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
 It was discovered that the GD Graphics Library (aka libgd) incorrectly
 handled certain malformed PNG images. A remote attacker could use this
 issue to cause the GD Graphics Library to crash, resulting in a denial
 of service, or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
 libgd-tools 2.0.36~rc1~dfsg-6ubuntu2.6
 libgd2-noxpm 2.0.36~rc1~dfsg-6ubuntu2.6
 libgd2-xpm 2.0.36~rc1~dfsg-6ubuntu2.6
In general, a standard system update will make all the necessary
changes.
References:
 https://www.ubuntu.com/usn/usn-3410-2
 https://www.ubuntu.com/usn/usn-3410-1
 CVE-2017-6362
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