CVE-2019-20421
First published: Mon Jan 27 2020(Updated: )
In Jp2Image::readMetadata() in jp2image.cpp in Exiv2 0.27.2, an input file can result in an infinite loop and hang, with high CPU consumption. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/exiv2 | <0.25-3.1ubuntu0.18.04.5 | 0.25-3.1ubuntu0.18.04.5 |
| ubuntu/exiv2 | <0.25-4ubuntu2.2 | 0.25-4ubuntu2.2 |
| ubuntu/exiv2 | <0.27.2-8 | 0.27.2-8 |
| ubuntu/exiv2 | <0.25-2.1ubuntu16.04.6 | 0.25-2.1ubuntu16.04.6 |
| debian/exiv2 | 0.27.3-3+deb11u2 0.27.3-3+deb11u1 0.27.6-1 0.28.3+dfsg-2 | |
| Exiv2 | =0.27.2 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =19.10 | |
| Debian | =9.0 | |
| Debian | =10.0 |
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Reference Links
- https://github.com/Exiv2/exiv2/commit/a82098f4f90cd86297131b5663c3dec6a34470e8
- https://github.com/Exiv2/exiv2/issues/1011
- https://security-tracker.debian.org/tracker/CVE-2019-20421
- https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html
- https://usn.ubuntu.com/4270-1/
- https://www.debian.org/security/2021/dsa-4958
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1800473
- https://github.com/Exiv2/exiv2/commit/edb4bf78ca5820f2c7a852c8f2df11e6aba45704
- https://access.redhat.com/security/cve/cve-2019-20421
- https://access.redhat.com/errata/RHSA-2020:1577
- https://bugzilla.redhat.com/show_bug.cgi?id=1800472
- https://ubuntu.com/security/notices/USN-4270-1
- https://www.cve.org/CVERecord?id=CVE-2019-20421
- https://nvd.nist.gov/vuln/detail/CVE-2019-20421
- https://launchpad.net/bugs/cve/CVE-2019-20421
- https://ubuntu.com/security/CVE-2019-20421
Frequently Asked Questions
What is the severity of CVE-2019-20421?
CVE-2019-20421 has a high severity rating as it can lead to a denial of service through high CPU consumption.
How do I fix CVE-2019-20421?
To fix CVE-2019-20421, update the Exiv2 package to a version that is not vulnerable, such as version 0.27.3-3+deb11u2 or later.
What types of attacks can exploit CVE-2019-20421?
CVE-2019-20421 can be exploited by remote attackers using crafted input files that cause an infinite loop.
Which software versions are affected by CVE-2019-20421?
CVE-2019-20421 affects Exiv2 versions prior to 0.27.3 and various specific versions of the package on Ubuntu and Debian systems.
Is there a known patch for CVE-2019-20421?
Yes, patches are available in newer releases of the Exiv2 software that address CVE-2019-20421.
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