CVE-2020-16303: Use After Free
First published: Thu Aug 13 2020(Updated: )
A use-after-free vulnerability in xps_finish_image_path() in devices/vector/gdevxps.c of Artifex Software GhostScript v9.50 allows a remote attacker to escalate privileges via a crafted PDF file. This is fixed in v9.51.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Artifex Ghostscript | =9.50 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =20.04 | |
| redhat/ghostscript | <9.51 | 9.51 |
| debian/ghostscript | 9.53.3~dfsg-7+deb11u7 10.0.0~dfsg-11+deb12u4 10.0.0~dfsg-11+deb12u5 10.04.0~dfsg-1 |
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Reference Links
- https://bugs.ghostscript.com/show_bug.cgi?id=701818
- https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=94d8955cb77
- https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html
- https://security.gentoo.org/glsa/202008-20
- https://usn.ubuntu.com/4469-1/
- https://www.debian.org/security/2020/dsa-4748
- https://launchpad.net/bugs/cve/CVE-2020-16303
- https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=94d8955cb77
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1870263
- https://access.redhat.com/errata/RHSA-2021:1852
- https://access.redhat.com/security/cve/cve-2020-16303
- https://bugzilla.redhat.com/show_bug.cgi?id=1870258
- https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=94d8955cb7725eb5f3557ddc02310c76124fdd1a
- https://security-tracker.debian.org/tracker/CVE-2020-16303
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16303
- https://nvd.nist.gov/vuln/detail/CVE-2020-16303
- https://ubuntu.com/security/CVE-2020-16303
Frequently Asked Questions
What is CVE-2020-16303?
CVE-2020-16303 is a use-after-free vulnerability in xps_finish_image_path() in devices/vector/gdevxps.c of Artifex Software GhostScript v9.50.
How does CVE-2020-16303 allow privilege escalation?
CVE-2020-16303 allows a remote attacker to escalate privileges by exploiting the use-after-free vulnerability via a crafted PDF file.
What is the severity of CVE-2020-16303?
CVE-2020-16303 has a severity score of 7.8 (high).
How can I fix CVE-2020-16303 on Red Hat systems?
To fix CVE-2020-16303 on Red Hat systems, update GhostScript to version 9.51 or newer.
How can I fix CVE-2020-16303 on Ubuntu systems?
To fix CVE-2020-16303 on Ubuntu systems, update GhostScript to version 9.51 or newer.
How can I fix CVE-2020-16303 on Debian systems?
To fix CVE-2020-16303 on Debian systems, update GhostScript to a version with the fix (refer to the official Debian advisory).
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