Division by zero in ImageMagick - CVE-2020-27760

Vulnerability identifier: #VU61572

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-27760

CWE-ID: CWE-369

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a divide-by-zero vulnerability in the GammaImage() function of /MagickCore/enhance.c. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

ImageMagick
Ubuntu
libimage-magick-perl (Ubuntu package)
imagemagick-common (Ubuntu package)
libmagickcore-6.q16-dev (Ubuntu package)
libmagickcore-dev (Ubuntu package)
imagemagick (Ubuntu package)
libimage-magick-q16-perl (Ubuntu package)
libmagickcore-6.q16-2-extra (Ubuntu package)
imagemagick-6.q16 (Ubuntu package)
libmagickcore-6-headers (Ubuntu package)
libmagick++-6.q16-5v5 (Ubuntu package)
perlmagick (Ubuntu package)
libmagickcore-6-arch-config (Ubuntu package)
libmagick++-6.q16-dev (Ubuntu package)
libmagickwand-6.q16-dev (Ubuntu package)
libmagickcore-6.q16-2 (Ubuntu package)
libmagickwand-6.q16-2 (Ubuntu package)

Install updates from vendor's website.

ImageMagick - update to 7.0.8-68
libimage-magick-perl (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
imagemagick-common (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagickcore-6.q16-dev (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagickcore-dev (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
imagemagick (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libimage-magick-q16-perl (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagickcore-6.q16-2-extra (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
imagemagick-6.q16 (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagickcore-6-headers (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagick++-6.q16-5v5 (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
perlmagick (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagickcore-6-arch-config (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagick++-6.q16-dev (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagickwand-6.q16-dev (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagickcore-6.q16-2 (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2
libmagickwand-6.q16-2 (Ubuntu package) - update to 8:6.8.9.97ubuntu5.16+esm2

• https://bugzilla.redhat.com/show_bug.cgi?id=1894239

• Ubuntu update for imagemagick