CVE-2020-16307: Null Pointer Dereference
First published: Thu Aug 13 2020(Updated: )
A null pointer dereference vulnerability in devices/vector/gdevtxtw.c and psi/zbfont.c of Artifex Software GhostScript v9.50 allows a remote attacker to cause a denial of service via a crafted postscript 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 |
Remedy
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=407c98a38c3a6ac1681144ed45cc2f4fc374c91f
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Reference Links
- http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=407c98a38c3a6ac1681144ed45cc2f4fc374c91f
- https://bugs.ghostscript.com/show_bug.cgi?id=701822
- 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-2020-16307
- http://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=407c98a38c3a6ac1681144ed45cc2f4fc374c91f
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1870163
- https://access.redhat.com/errata/RHSA-2021:1852
- https://access.redhat.com/security/cve/cve-2020-16307
- https://bugzilla.redhat.com/show_bug.cgi?id=1870162
- https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=407c98a38c3a6ac1681144ed45cc2f4fc374c91f
- https://security-tracker.debian.org/tracker/CVE-2020-16307
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16307
- https://nvd.nist.gov/vuln/detail/CVE-2020-16307
- https://ubuntu.com/security/CVE-2020-16307
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2020-16307.
What is the severity of CVE-2020-16307?
The severity of CVE-2020-16307 is medium, with a severity value of 5.5.
Which software versions are affected by CVE-2020-16307?
The affected software versions are GhostScript v9.50 (Artifex Software), 9.27~dfsg-2+deb10u5, 9.27~dfsg-2+deb10u9, 9.53.3~dfsg-7+deb11u6, 9.53.3~dfsg-7+deb11u5, 10.0.0~dfsg-11+deb12u2, 10.0.0~dfsg-11+deb12u1, 10.02.0~dfsg-2 (Debian), 9.26~dfsg+0-0ubuntu0.18.04.13 (Ubuntu 18.04), and 9.50~dfsg-5ubuntu4.2, 9.51~dfsg-1 (Ubuntu 20.04).
How does CVE-2020-16307 impact the software?
CVE-2020-16307 allows a remote attacker to cause a denial of service through a crafted postscript file.
How can I fix CVE-2020-16307?
CVE-2020-16307 is fixed in GhostScript v9.51 (Artifex Software). Users should update to this version or apply the respective patches provided by the software vendor (Red Hat, Debian, or Ubuntu).
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