CVE-2018-18544 Denial of service in n/a

Medium 6.5 Published 21 Oct 2018 Updated 5 Aug 2024

A memory leak in ImageMagick and GraphicsMagick allows attackers to cause a denial of service via crafted MSL images.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2018-18544?

CVE-2018-18544 is a medium-severity denial of service vulnerability in Graphicsmagick Graphicsmagick, published on 21 Oct 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

There is a memory leak in the function WriteMSLImage of coders/msl.c in ImageMagick 7.0.8-13 Q16, and the function ProcessMSLScript of coders/msl.c in GraphicsMagick before 1.3.31.

Weakness: CWE-772

Which versions are affected by CVE-2018-18544?

It affects 3 products.

Linux distribution packages (11)

`ImageMagick` SUSE:Linux Enterprise Desktop 12 SP3	All versions	`6.8.8.1-71.93.2`
`ImageMagick` SUSE:Linux Enterprise Desktop 12 SP4	All versions	`6.8.8.1-71.93.2`
`ImageMagick` SUSE:Linux Enterprise Server 12 SP3	All versions	`6.8.8.1-71.93.2`
`ImageMagick` SUSE:Linux Enterprise Server 12 SP4	All versions	`6.8.8.1-71.93.2`
`ImageMagick` SUSE:Linux Enterprise Server for SAP Applications 12 SP3	All versions	`6.8.8.1-71.93.2`
`ImageMagick` SUSE:Linux Enterprise Server for SAP Applications 12 SP4	All versions	`6.8.8.1-71.93.2`
`ImageMagick` SUSE:Linux Enterprise Software Development Kit 12 SP3	All versions	`6.8.8.1-71.93.2`
`ImageMagick` SUSE:Linux Enterprise Software Development Kit 12 SP4	All versions	`6.8.8.1-71.93.2`
`ImageMagick` SUSE:Linux Enterprise Workstation Extension 12 SP3	All versions	`6.8.8.1-71.93.2`
`ImageMagick` SUSE:Linux Enterprise Workstation Extension 12 SP4	All versions	`6.8.8.1-71.93.2`
`GraphicsMagick` SUSE:Package Hub 15	All versions	`1.3.29-bp150.2.9.1`

Products include Graphicsmagick Graphicsmagick, Imagemagick Imagemagick, Opensuse Leap.

How do I fix CVE-2018-18544?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-18544 being exploited?

There is no known exploitation of CVE-2018-18544 in the wild and no public exploit code.

All Graphicsmagick Graphicsmagick vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-18544, GHSA-w2cq-hjvv-8q4h, SUSE-SU-2018:4023-1, UBUNTU-CVE-2018-18544, openSUSE-SU-2018:3839-1.