USN-3272-2: Ghostscript regression

Releases

• Ubuntu 17.04
• Ubuntu 16.10
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• 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 versions:

Ubuntu 17.04

• ghostscript - 9.19~dfsg+1-0ubuntu7.4
• ghostscript-x - 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 - 9.19~dfsg+1-0ubuntu6.6
• ghostscript-x - 9.19~dfsg+1-0ubuntu6.6
• libgs9 - 9.19~dfsg+1-0ubuntu6.6
• libgs9-common - 9.19~dfsg+1-0ubuntu6.6

Ubuntu 16.04

• ghostscript - 9.18~dfsg~0-0ubuntu2.6
• ghostscript-x - 9.18~dfsg~0-0ubuntu2.6
• libgs9 - 9.18~dfsg~0-0ubuntu2.6
• libgs9-common - 9.18~dfsg~0-0ubuntu2.6

Ubuntu 14.04

• ghostscript - 9.10~dfsg-0ubuntu10.9
• ghostscript-x - 9.10~dfsg-0ubuntu10.9
• libgs9 - 9.10~dfsg-0ubuntu10.9
• libgs9-common - 9.10~dfsg-0ubuntu10.9

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

References

• https://launchpad.net/bugs/1687614