ghostscript: In Artifex Ghostscript through 9.25, the setpattern operator did not properly validate certain types
CVE-2018-19134 is fixed in 4 products on 1 platform, first by ghostscript 9.26~dfsg+0-0ubuntu0.18.04.1, released January 2, 2019. It is not reported as exploited. Patch Radar priority: Routine.
In Artifex Ghostscript through 9.25, the setpattern operator did not properly validate certain types. A specially crafted PostScript document could exploit this to crash Ghostscript or, possibly, execute arbitrary code in the context of the Ghostscript process. This is a type confusion issue because of failure to check whether the Implementation of a pattern dictionary was a structure type.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ghostscript · Ubuntu 18.04.6 LTS (bionic) | 9.26~dfsg+0-0ubuntu0.18.04.1 | ghostscript 9.26~dfsg+0-0ubuntu0.18.04.1 | Jan 2, 2019 |
| ghostscript-x · Ubuntu 18.04.6 LTS (bionic) | 9.26~dfsg+0-0ubuntu0.18.04.1 | ghostscript-x 9.26~dfsg+0-0ubuntu0.18.04.1 | Jan 2, 2019 |
| libgs9 · Ubuntu 18.04.6 LTS (bionic) | 9.26~dfsg+0-0ubuntu0.18.04.1 | libgs9 9.26~dfsg+0-0ubuntu0.18.04.1 | Jan 2, 2019 |
| libgs9-common · Ubuntu 18.04.6 LTS (bionic) | 9.26~dfsg+0-0ubuntu0.18.04.1 | libgs9-common 9.26~dfsg+0-0ubuntu0.18.04.1 | Jan 2, 2019 |
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