CVE-2020-12420: Race Condition
First published: Tue Jun 30 2020(Updated: )
Last updated 24 July 2024
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Firefox ESR | <68.10 | 68.10 |
| Mozilla Thunderbird | <78 | 78 |
| Mozilla Thunderbird | <68.10 | 68.10 |
| Mozilla Firefox | <78 | 78 |
| Mozilla Firefox | <78.0 | |
| Mozilla Firefox ESR | <68.10.0 | |
| Mozilla Thunderbird | <68.10.0 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| Canonical Ubuntu Linux | =20.04 | |
| openSUSE Leap | =15.1 | |
| openSUSE Leap | =15.2 | |
| 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=1643437
- https://www.mozilla.org/security/advisories/mfsa2020-24/
- https://www.mozilla.org/security/advisories/mfsa2020-25/
- https://www.mozilla.org/security/advisories/mfsa2020-26/
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
- https://usn.ubuntu.com/4421-1/
- https://security.gentoo.org/glsa/202007-09
- https://security.gentoo.org/glsa/202007-10
- https://launchpad.net/bugs/cve/CVE-2020-12420
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-25/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-29/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-26/
- 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-2020-12420
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-25/#CVE-2020-12420
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-26/#CVE-2020-12420
- https://security-tracker.debian.org/tracker/CVE-2020-12420
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12420
- https://nvd.nist.gov/vuln/detail/CVE-2020-12420
- https://ubuntu.com/security/CVE-2020-12420
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2020-12420?
CVE-2020-12420 is a vulnerability related to a race condition when trying to connect to a STUN server, leading to memory corruption and a potentially exploitable crash.
How does CVE-2020-12420 impact Mozilla Firefox and Thunderbird?
CVE-2020-12420 affects Mozilla Firefox versions up to 78, Mozilla Thunderbird versions up to 78, Mozilla Firefox ESR versions up to 68.10, and Mozilla Thunderbird versions up to 68.10.
What is the severity of CVE-2020-12420?
CVE-2020-12420 has a severity rating of 7 out of 10, indicating a high severity.
How can the CVE-2020-12420 vulnerability be exploited?
The CVE-2020-12420 vulnerability can potentially be exploited by causing a use-after-free of a pointer, leading to memory corruption and a crash.
Where can I find more information about CVE-2020-12420?
More information about CVE-2020-12420 can be found on the Mozilla bugzilla page and the Mozilla security advisories page.
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