CVE Number – CVE-2017-14997
A vulnerability in the ReadPICTImage function of GraphicsMagick could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.
The vulnerability is due to an integer underflow condition in the ReadPICTImage function, as defined in the coders/pict.c source code of the affected software. An attacker could exploit this vulnerability by persuading a user to access a malicious image file on the targeted system. A successful exploit could cause a memory allocation failure, resulting in a DoS condition on the targeted system.
GraphicsMagick has confirmed the vulnerability and released a software patch.
To exploit this vulnerability, the attacker may use misleading language or instructions to persuade a user to access an image file that submits malicious input to the affected software.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.
Users are advised not to visit websites or follow links that have suspicious characteristics or cannot be verified as safe.
Administrators are advised to use an unprivileged account when browsing the Internet.
Administrators are advised to monitor critical systems.
GraphicsMagick has released a bug report at the following link: Bug 511
GraphicsMagick has released a patch at the following link: GraphicsMagick Changeset
Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.