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Ubuntu 17.04 Security: USN-3403-1 Critical Ghostscript DoS Threat

ubuntu
Calendar Grey August 28, 2017
Dist Ubuntu Esm H88
Multiple security vulnerabilities discovered in Ghostscript. Upgrade now to mitigate risks of potential denial-of-service attacks and exploitation attempts.
Several security issues were fixed in Ghostscript.

Summary

Several security issues were fixed in Ghostscript.

Software Description:

- ghostscript: PostScript and PDF interpreter

Details:

Kamil Frankowicz discovered that Ghostscript mishandles references.

A remote attacker could use this to cause a denial of service.

(CVE-2017-11714)

Kim Gwan Yeong discovered that Ghostscript could allow a heap-based

buffer over-read and application crash. A remote attacker could use a

crafted document to cause a denial of service. (CVE-2017-9611, 

CVE-2017-9726, CVE-2017-9727, CVE-2017-9739)

Kim Gwan Yeong discovered an use-after-free vulnerability in

Ghostscript. A remote attacker could use a crafted file to cause a

denial of service. (CVE-2017-9612)

Kim Gwan Yeong discovered a lack of integer overflow check in

Ghostscript. A remote attacker could use crafted PostScript document to

cause a denial of service. (CVE-2017-9835)

Topics%20covered

Topics Covered

security advisory denial of service critical software update Ubuntu Ghostscript

Update Instructions

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

Ubuntu 17.04:
  ghostscript                     9.19~dfsg+1-0ubuntu7.6
  ghostscript-x                   9.19~dfsg+1-0ubuntu7.6
  libgs9                          9.19~dfsg+1-0ubuntu7.6
  libgs9-common                   9.19~dfsg+1-0ubuntu7.6

Ubuntu 16.04 LTS:
  ghostscript                     9.18~dfsg~0-0ubuntu2.7
  ghostscript-x                   9.18~dfsg~0-0ubuntu2.7
  libgs9                          9.18~dfsg~0-0ubuntu2.7
  libgs9-common                   9.18~dfsg~0-0ubuntu2.7

Ubuntu 14.04 LTS:
  ghostscript                     9.10~dfsg-0ubuntu10.10
  ghostscript-x                   9.10~dfsg-0ubuntu10.10
  libgs9                          9.10~dfsg-0ubuntu10.10
  libgs9-common                   9.10~dfsg-0ubuntu10.10

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

References

  https://ubuntu.com/security/notices/USN-3403-1

  CVE-2017-11714, CVE-2017-9611, CVE-2017-9612, CVE-2017-9726,

  CVE-2017-9727, CVE-2017-9739, CVE-2017-9835

Severity
critical
Lowest
Low
Medium
High
Critical

August 28, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical software update Ubuntu Ghostscript

Package Information

  https://launchpad.net/ubuntu/+source/ghostscript/9.19~dfsg+1-0ubuntu7.6
  https://launchpad.net/ubuntu/+source/ghostscript/9.18~dfsg~0-0ubuntu2.7
  https://launchpad.net/ubuntu/+source/ghostscript/9.10~dfsg-0ubuntu10.10

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