CVE-2018-19477: Incorrect Type Cast
First published: Fri Nov 23 2018(Updated: )
A vulnerability was found in Artifex Ghostscript before 9.26. A JBIG2Decode type confusion in psi/zfjbig2.c allows remote attackers to bypass intended access restrictions. References: <a href="https://bugs.ghostscript.com/show_bug.cgi?id=700168">https://bugs.ghostscript.com/show_bug.cgi?id=700168</a> <a href="https://www.ghostscript.com/doc/9.26/History9.htm#Version9.26">https://www.ghostscript.com/doc/9.26/History9.htm#Version9.26</a> Upstream Patches: <a href="http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=ef252e7dc214bcbd9a2539216aab9202848602bb">http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=ef252e7dc214bcbd9a2539216aab9202848602bb</a> <a href="http://git.ghostscript.com/?p=ghostpdl.git;h=606a22e77e7f081781e99e44644cd0119f559e03">http://git.ghostscript.com/?p=ghostpdl.git;h=606a22e77e7f081781e99e44644cd0119f559e03</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/ghostscript | <9.26 | 9.26 |
| debian/ghostscript | 9.53.3~dfsg-7+deb11u7 10.0.0~dfsg-11+deb12u4 10.0.0~dfsg-11+deb12u5 10.03.1~dfsg-2 10.04.0~dfsg-1 | |
| Ghostscript | <9.26 | |
| Debian GNU/Linux | =8.0 | |
| Debian GNU/Linux | =9.0 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Linux | =18.10 | |
| redhat openshift container platform | =3.11 | |
| redhat enterprise Linux desktop | =7.0 | |
| redhat enterprise Linux server | =7.0 | |
| redhat enterprise Linux server | =7.6 | |
| redhat enterprise Linux server aus | =7.6 | |
| redhat enterprise Linux server eus | =7.6 | |
| redhat enterprise Linux server tus | =7.6 | |
| redhat enterprise Linux workstation | =7.0 |
Remedy
http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=ef252e7dc214bcbd9a2539216aab9202848602bb
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Reference Links
- http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=ef252e7dc214bcbd9a2539216aab9202848602bb
- http://git.ghostscript.com/?p=ghostpdl.git;h=606a22e77e7f081781e99e44644cd0119f559e03
- http://www.securityfocus.com/bid/106154
- https://access.redhat.com/errata/RHBA-2019:0327
- https://access.redhat.com/errata/RHSA-2019:0229
- https://bugs.ghostscript.com/show_bug.cgi?id=700168
- https://lists.debian.org/debian-lts-announce/2018/11/msg00036.html
- https://semmle.com/news/semmle-discovers-severe-vulnerability-ghostscript-postscript-pdf
- https://usn.ubuntu.com/3831-1/
- https://www.debian.org/security/2018/dsa-4346
- https://www.ghostscript.com/doc/9.26/History9.htm#Version9.26
- https://launchpad.net/bugs/cve/CVE-2018-19477
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1654470
- https://access.redhat.com/security/cve/CVE-2018-16509
- https://access.redhat.com/security/cve/cve-2018-16509
- https://access.redhat.com/support/policy/updates/errata/
- https://bugzilla.redhat.com/show_bug.cgi?id=1654468
- http://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=ef252e7dc214bcbd9a2539216aab9202848602bb
- http://git.ghostscript.com/?p=ghostpdl.git%3Bh=606a22e77e7f081781e99e44644cd0119f559e03
- https://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=ef252e7dc214bcbd9a2539216aab9202848602bb
- https://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=606a22e77e7f081781e99e44644cd0119f559e03
- https://security-tracker.debian.org/tracker/CVE-2018-19477
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19477
- https://nvd.nist.gov/vuln/detail/CVE-2018-19477
- https://ubuntu.com/security/CVE-2018-19477
Frequently Asked Questions
What is the severity of CVE-2018-19477?
CVE-2018-19477 has a medium severity rating due to its potential to allow remote attackers to bypass access restrictions.
How do I fix CVE-2018-19477?
To fix CVE-2018-19477, upgrade Ghostscript to version 9.26 or later.
Which versions of Ghostscript are affected by CVE-2018-19477?
Versions of Ghostscript prior to 9.26 are affected by CVE-2018-19477.
Can CVE-2018-19477 be exploited remotely?
Yes, CVE-2018-19477 can be exploited remotely, allowing unauthorized access.
What systems are impacted by CVE-2018-19477?
CVE-2018-19477 impacts various systems including Debian, Ubuntu, and Red Hat running vulnerable versions of Ghostscript.
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