CVE-2019-17026: Mozilla Firefox And Thunderbird Type Confusion Vulnerability
First published: Wed Jan 08 2020(Updated: )
Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Thunderbird | <68.4.1 | 68.4.1 |
| redhat/firefox | <72.0.1 | 72.0.1 |
| redhat/firefox | <68.4.1 | 68.4.1 |
| redhat/thunderbird | <68.4.1 | 68.4.1 |
| Mozilla Firefox | <72.0.1 | 72.0.1 |
| Mozilla Firefox ESR | <68.4.1 | 68.4.1 |
| Mozilla Firefox | <72.0.1 | |
| Mozilla Firefox ESR | <68.4.1 | |
| Mozilla Thunderbird | <68.4.1 | |
| Canonical Ubuntu Linux | =16.04 | |
| Mozilla Firefox and Thunderbird | ||
| debian/firefox | 133.0.3-1 | |
| debian/firefox-esr | 115.14.0esr-1~deb11u1 128.5.0esr-1~deb11u1 128.3.1esr-1~deb12u1 128.5.0esr-1~deb12u1 128.5.0esr-1 128.5.1esr-1 | |
| debian/thunderbird | 1:115.12.0-1~deb11u1 1:128.5.0esr-1~deb11u1 1:115.16.0esr-1~deb12u1 1:128.5.0esr-1~deb12u1 1:128.5.2esr-1 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1607443
- https://www.mozilla.org/security/advisories/mfsa2020-03/
- https://www.mozilla.org/security/advisories/mfsa2020-04/
- https://security.gentoo.org/glsa/202003-02
- https://usn.ubuntu.com/4335-1/
- http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html
- https://launchpad.net/bugs/cve/CVE-2019-17026
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-04/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-03/#CVE-2019-17026
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1788980
- https://access.redhat.com/errata/RHSA-2020:0086
- https://access.redhat.com/errata/RHSA-2020:0085
- https://access.redhat.com/security/cve/cve-2019-17026
- https://access.redhat.com/errata/RHSA-2020:0111
- https://access.redhat.com/errata/RHSA-2020:0123
- https://access.redhat.com/errata/RHSA-2020:0120
- https://access.redhat.com/errata/RHSA-2020:0127
- https://access.redhat.com/errata/RHSA-2020:0292
- https://access.redhat.com/errata/RHSA-2020:0295
- https://bugzilla.redhat.com/show_bug.cgi?id=1789214
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-03/
- https://nvd.nist.gov/vuln/detail/CVE-2019-17026
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-04/#CVE-2019-17026
- https://security-tracker.debian.org/tracker/CVE-2019-17026
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17026
- https://ubuntu.com/security/CVE-2019-17026
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2019-17026?
The severity of CVE-2019-17026 is critical with a value of 8.8.
Which software versions are affected by CVE-2019-17026?
The affected software versions include Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.
What is the vulnerability description of CVE-2019-17026?
CVE-2019-17026 is a type confusion vulnerability in the IonMonkey JIT compiler of Mozilla Firefox and Thunderbird, which could be exploited by targeted attacks.
How do I fix CVE-2019-17026?
To fix CVE-2019-17026, update to Firefox ESR 68.4.1 or newer, Thunderbird 68.4.1 or newer, or Firefox 72.0.1 or newer.
Where can I find more information about CVE-2019-17026?
You can find more information about CVE-2019-17026 in the following references: [Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1607443), [Mozilla Security Advisories](https://www.mozilla.org/en-US/security/advisories/mfsa2020-03/), [Mozilla Security Advisories](https://www.mozilla.org/security/advisories/mfsa2020-03/).
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