ImageMagick GetMagickProperty Function NULL Pointer Dereference Vulnerability [CVE-2018-16329]

CVE Number – CVE-2018-16329

A vulnerability in the GetMagickProperty function of ImageMagick could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.

The vulnerability is due to improper memory operations performed by the affected software. An attacker could exploit this vulnerability by persuading a user to access an image file that submits malicious input to the targeted system. A successful exploit could trigger a NULL pointer dereference condition in the GetMagickProperty function, as defined in the MagickCore/property.c source code file of the affected software, which could result in a DoS condition.

ImageMagick confirmed the vulnerability and released software updates.

Analysis
  • To exploit this vulnerability, the attacker must have local access to the targeted system or use misleading language and instructions to persuade a user on the system to open an image file that submits malicious input.
Safeguards
  • 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.

Vendor Announcements
  • ImageMagick released an issue report at the following link: issue #1225
Fixed Software




Duncan Newell

Duncan is a technology professional with over 20 years experience of working in various IT roles. He also has a wide range of other skills in radio, electronics and telecommunications.

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