USN-3272-2: Ghostscript regression

Ubuntu Security Notice USN-3272-2

16th May, 2017

ghostscript regression

A security issue affects these releases of Ubuntu and its
derivatives:

Ubuntu 17.04
Ubuntu 16.10
Ubuntu 16.04 LTS
Ubuntu 14.04 LTS

Summary

USN-3272-1 introduced a regression in Ghostscript.

Software description

ghostscript
– PostScript and PDF interpreter

Details

USN-3272-1 fixed vulnerabilities in Ghostscript. This change introduced
a regression when the DELAYBIND feature is used with the eqproc
command. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that Ghostscript improperly handled parameters to
the rsdparams and eqproc commands. An attacker could use these to
craft a malicious document that could disable -dSAFER protections,
thereby allowing the execution of arbitrary code, or cause a denial
of service (application crash). (CVE-2017-8291)

Kamil Frankowicz discovered a use-after-free vulnerability in the
color management module of Ghostscript. An attacker could use this
to cause a denial of service (application crash). (CVE-2016-10217)

Kamil Frankowicz discovered a divide-by-zero error in the scan
conversion code in Ghostscript. An attacker could use this to cause
a denial of service (application crash). (CVE-2016-10219)

Kamil Frankowicz discovered multiple NULL pointer dereference errors in
Ghostscript. An attacker could use these to cause a denial of service
(application crash). (CVE-2016-10220, CVE-2017-5951, CVE-2017-7207)

Update instructions

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

Ubuntu 17.04:: ghostscript-x

9.19~dfsg+1-0ubuntu7.4; ghostscript

9.19~dfsg+1-0ubuntu7.4; libgs9

9.19~dfsg+1-0ubuntu7.4; libgs9-common

9.19~dfsg+1-0ubuntu7.4
Ubuntu 16.10:: ghostscript-x

9.19~dfsg+1-0ubuntu6.6; ghostscript

9.19~dfsg+1-0ubuntu6.6; libgs9

9.19~dfsg+1-0ubuntu6.6; libgs9-common

9.19~dfsg+1-0ubuntu6.6
Ubuntu 16.04 LTS:: ghostscript-x

9.18~dfsg~0-0ubuntu2.6; ghostscript

9.18~dfsg~0-0ubuntu2.6; libgs9

9.18~dfsg~0-0ubuntu2.6; libgs9-common

9.18~dfsg~0-0ubuntu2.6
Ubuntu 14.04 LTS:: ghostscript-x

9.10~dfsg-0ubuntu10.9; ghostscript

9.10~dfsg-0ubuntu10.9; libgs9

9.10~dfsg-0ubuntu10.9; libgs9-common

9.10~dfsg-0ubuntu10.9

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

LP: 1687614

Source: USN-3272-2: Ghostscript regression

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