=========================================================================Ubuntu Security Notice USN-5158-1
November 29, 2021
imagemagick vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Summary:
Several security issues were fixed in ImageMagick.
Software Description:
- imagemagick: Image manipulation programs and library
Details:
It was discovered that ImageMagick incorrectly handled certain values
when processing visual effects based image files. By tricking a user into
opening a specially crafted image file, an attacker could crash the
application causing a denial of service. (CVE-2021-20244)
It was discovered that ImageMagick incorrectly handled certain values
when performing resampling operations. By tricking a user into opening
a specially crafted image file, an attacker could crash the application
causing a denial of service. (CVE-2021-20246)
It was discovered that ImageMagick incorrectly handled certain values
when processing visual effects based image files. By tricking a user into
opening a specially crafted image file, an attacker could crash the
application causing a denial of service (CVE-2021-20309)
It was discovered that ImageMagick incorrectly handled certain values
when processing thumbnail image data. By tricking a user into opening
a specially crafted image file, an attacker could crash the application
causing a denial of service. (CVE-2021-20312)
It was discovered that ImageMagick incorrectly handled memory cleanup
when performing certain cryptographic operations. Under certain conditions
sensitive cryptographic information could be disclosed. (CVE-2021-20313)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
libmagick++-6.q16-7 8:6.9.7.4+dfsg-16ubuntu6.12
Ubuntu 16.04 ESM:
libmagick++-6.q16-5v5 8:6.8.9.9-7ubuntu5.16+esm1
Ubuntu 14.04 ESM:
libmagick++5 8:6.7.7.10-6ubuntu3.13+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5158-1
CVE-2021-20244, CVE-2021-20246, CVE-2021-20309, CVE-2021-20312,
CVE-2021-20313
Package Information:
https://launchpad.net/ubuntu/+source/imagemagick/8:6.9.7.4+dfsg-16ubuntu6.12
