CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
91.4%
Under certain conditions, when running the nsDocShell destructor, a race
condition can cause a use-after-free. We are aware of targeted attacks in
the wild abusing this flaw. This vulnerability affects Thunderbird <
68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | firefox | < 74.0.1+build1-0ubuntu0.18.04.1 | UNKNOWN |
ubuntu | 19.10 | noarch | firefox | < 74.0.1+build1-0ubuntu0.19.10.1 | UNKNOWN |
ubuntu | 20.04 | noarch | firefox | < 75.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 16.04 | noarch | firefox | < 74.0.1+build1-0ubuntu0.16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | thunderbird | < 1:68.7.0+build1-0ubuntu0.18.04.1 | UNKNOWN |
ubuntu | 19.10 | noarch | thunderbird | < 1:68.7.0+build1-0ubuntu0.19.10.1 | UNKNOWN |
ubuntu | 20.04 | noarch | thunderbird | < 1:68.7.0+build1-0ubuntu1 | UNKNOWN |
ubuntu | 16.04 | noarch | thunderbird | < 1:68.7.0+build1-0ubuntu0.16.04.2 | UNKNOWN |
launchpad.net/bugs/cve/CVE-2020-6819
nvd.nist.gov/vuln/detail/CVE-2020-6819
security-tracker.debian.org/tracker/CVE-2020-6819
ubuntu.com/security/notices/USN-4317-1
ubuntu.com/security/notices/USN-4328-1
ubuntu.com/security/notices/USN-4335-1
www.cve.org/CVERecord?id=CVE-2020-6819
www.mozilla.org/en-US/security/advisories/mfsa2020-11/#CVE-2020-6819
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
91.4%