CVE-2018-20551: Input Validation
First published: Fri Dec 28 2018(Updated: )
A flaw was found in Poppler 0.72.0. A reachable Object::getString assertion allows attackers to cause a denial of service due to construction of invalid rich media annotation assets in the AnnotRichMedia class in Annot.c. References: <a href="https://gitlab.freedesktop.org/poppler/poppler/issues/703">https://gitlab.freedesktop.org/poppler/poppler/issues/703</a> Upstream Patch: <a href="https://gitlab.freedesktop.org/poppler/poppler/merge_requests/146">https://gitlab.freedesktop.org/poppler/poppler/merge_requests/146</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| freedesktop poppler | =0.72.0 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =18.10 | |
| debian/poppler | 20.09.0-3.1+deb11u1 22.12.0-2 24.08.0-3 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2019:2713
- https://gitlab.freedesktop.org/poppler/poppler/issues/703
- https://gitlab.freedesktop.org/poppler/poppler/merge_requests/146
- https://usn.ubuntu.com/3886-1/
- https://launchpad.net/bugs/cve/CVE-2018-20551
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1665261
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1665260
- https://access.redhat.com/security/cve/cve-2018-20551
- https://bugzilla.redhat.com/show_bug.cgi?id=1665259
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20551
- https://nvd.nist.gov/vuln/detail/CVE-2018-20551
- https://security-tracker.debian.org/tracker/CVE-2018-20551
- https://ubuntu.com/security/CVE-2018-20551
- https://gitlab.freedesktop.org/poppler/poppler/commit/7f87dc10b6adccd6d1b977a28b064add254aa2da
Frequently Asked Questions
What is the severity of CVE-2018-20551?
The severity of CVE-2018-20551 is medium.
What software versions are affected by CVE-2018-20551?
Poppler versions 0.72.0 and older are affected by CVE-2018-20551.
How can attackers exploit CVE-2018-20551?
Attackers can exploit CVE-2018-20551 by constructing invalid rich media annotation assets.
What is the remedy for CVE-2018-20551?
The recommended remedy for CVE-2018-20551 is to update Poppler to version 0.71.0-5 or newer.
Are there any references for CVE-2018-20551?
Yes, you can find more information about CVE-2018-20551 at the following references: [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2019:2713), [GitLab issue](https://gitlab.freedesktop.org/poppler/poppler/issues/703), and [GitLab merge request](https://gitlab.freedesktop.org/poppler/poppler/merge_requests/146).
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