CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
81.8%
When trying to connect to a STUN server, a race condition could have caused
a use-after-free of a pointer, leading to memory corruption and a
potentially exploitable crash. This vulnerability affects Firefox ESR <
68.10, Firefox < 78, and Thunderbird < 68.10.0.
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | firefox | < 78.0.1+build1-0ubuntu0.18.04.1 | UNKNOWN |
ubuntu | 19.10 | noarch | firefox | < 78.0.1+build1-0ubuntu0.19.10.1 | UNKNOWN |
ubuntu | 20.04 | noarch | firefox | < 78.0.1+build1-0ubuntu0.20.04.1 | UNKNOWN |
ubuntu | 20.10 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 21.04 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 21.10 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 22.04 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 22.10 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 23.04 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 23.10 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
launchpad.net/bugs/cve/CVE-2020-12420
nvd.nist.gov/vuln/detail/CVE-2020-12420
security-tracker.debian.org/tracker/CVE-2020-12420
ubuntu.com/security/notices/USN-4408-1
ubuntu.com/security/notices/USN-4421-1
www.cve.org/CVERecord?id=CVE-2020-12420
www.mozilla.org/en-US/security/advisories/mfsa2020-24/#CVE-2020-12420
www.mozilla.org/en-US/security/advisories/mfsa2020-25/#CVE-2020-12420
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
81.8%