CVE-2020-12422: Integer Overflow
First published: Tue Jun 30 2020(Updated: )
In non-standard configurations, a JPEG image created by JavaScript could have caused an internal variable to overflow, resulting in an out of bounds write, memory corruption, and a potentially exploitable crash.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Thunderbird | <78 | 78 |
| Mozilla Firefox | <78 | 78 |
| Mozilla Firefox | <78.0 | |
| openSUSE Leap | =15.1 | |
| openSUSE Leap | =15.2 | |
| debian/firefox | 133.0.3-1 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450353
- https://www.mozilla.org/security/advisories/mfsa2020-24/
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
- https://security.gentoo.org/glsa/202007-10
- https://launchpad.net/bugs/cve/CVE-2020-12422
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-29/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-24/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-24/#CVE-2020-12416
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-24/#CVE-2020-12422
- https://security-tracker.debian.org/tracker/CVE-2020-12422
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12422
- https://nvd.nist.gov/vuln/detail/CVE-2020-12422
- https://ubuntu.com/security/CVE-2020-12422
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2020-12422?
CVE-2020-12422 is a vulnerability that occurs when a JPEG image created by JavaScript can cause an internal variable to overflow, resulting in memory corruption and potentially exploitable crashes.
Which software is affected by CVE-2020-12422?
Mozilla Firefox and Mozilla Thunderbird versions up to and excluding 78 are affected by CVE-2020-12422.
What is the severity of CVE-2020-12422?
CVE-2020-12422 has a severity level of medium (4).
How can I fix CVE-2020-12422?
To fix CVE-2020-12422, update Mozilla Firefox and Mozilla Thunderbird to version 78 or above.
Where can I find more information about CVE-2020-12422?
You can find more information about CVE-2020-12422 on the Mozilla Bugzilla website and the Mozilla Security Advisories page.
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