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Ubuntu 18.04 LTS USN-3785-1 Critical: ImageMagick DoS Threats

ubuntu
Calendar Grey October 4, 2018
Dist Ubuntu Esm H88
Numerous vulnerabilities have been resolved in ImageMagick according to Ubuntu Security Notice USN-3785-1; users are advised to apply the update.
Several security issues were fixed in ImageMagick.

Summary

Several security issues were fixed in ImageMagick.

Software Description:

- imagemagick: Image manipulation programs and library

Details:

Due to a large number of issues discovered in GhostScript that prevent

it from being used by ImageMagick safely, this update includes a

default policy change that disables support for the Postscript and

PDF formats in ImageMagick. This policy can be overridden if necessary

by using an alternate ImageMagick policy configuration.

It was discovered that several memory leaks existed when handling

certain images in ImageMagick. An attacker could use this to cause a

denial of service. (CVE-2018-14434, CVE-2018-14435, CVE-2018-14436,

CVE-2018-14437, CVE-2018-16640, CVE-2018-16750)

It was discovered that ImageMagick did not properly initialize a

variable before using it when processing MAT images. An attacker could

use this to cause a denial of service or possibly execute arbitrary

code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-14551)

It...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical memory leak ubuntu imagemagick

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  imagemagick                     8:6.9.7.4+dfsg-16ubuntu6.4
  imagemagick-6.q16               8:6.9.7.4+dfsg-16ubuntu6.4
  libmagick++-6.q16-7             8:6.9.7.4+dfsg-16ubuntu6.4
  libmagickcore-6.q16-3           8:6.9.7.4+dfsg-16ubuntu6.4
  libmagickcore-6.q16-3-extra     8:6.9.7.4+dfsg-16ubuntu6.4

Ubuntu 16.04 LTS:
  imagemagick                     8:6.8.9.9-7ubuntu5.13
  imagemagick-6.q16               8:6.8.9.9-7ubuntu5.13
  libmagick++-6.q16-5v5           8:6.8.9.9-7ubuntu5.13
  libmagickcore-6.q16-2           8:6.8.9.9-7ubuntu5.13
  libmagickcore-6.q16-2-extra     8:6.8.9.9-7ubuntu5.13

Ubuntu 14.04 LTS:
  imagemagick                     8:6.7.7.10-6ubuntu3.13
  libmagick++5                    8:6.7.7.10-6ubuntu3.13
  libmagickcore5                  8:6.7.7.10-6ubuntu3.13
  libmagickcore5-extra            8:6.7.7.10-6ubuntu3.13

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-3785-1

CVE-2018-14434, CVE-2018-14435, CVE-2018-14436, CVE-2018-14437,

CVE-2018-14551, CVE-2018-16323, CVE-2018-16640, CVE-2018-16642,

CVE-2018-16643, CVE-2018-16644, CVE-2018-16645, CVE-2018-16749,

CVE-2018-16750, https://bugs.launchpad.net/ubuntu/+source/imagemagick/+bug/1793485

Severity
critical
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Critical

October 04, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical memory leak ubuntu imagemagick

Package Information

https://launchpad.net/ubuntu/+source/imagemagick/8:6.9.7.4+dfsg-16ubuntu6.4
https://launchpad.net/ubuntu/+source/imagemagick/8:6.8.9.9-7ubuntu5.13
https://launchpad.net/ubuntu/+source/imagemagick/8:6.7.7.10-6ubuntu3.13

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