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%
Severity: Critical
Date : 2020-04-04
CVE-ID : CVE-2020-6819 CVE-2020-6820
Package : firefox
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-1125
The package firefox before version 74.0.1-1 is vulnerable to arbitrary
code execution.
Upgrade to 74.0.1-1.
The problems have been fixed upstream in version 74.0.1.
None.
A use-after-free vulnerability has been found in Firefox before 74.0.1
where under certain conditions, when running the nsDocShell destructor,
a race condition can cause a use-after-free. Mozilla is aware of
targeted attacks in the wild abusing this flaw.
A use-after-free vulnerability has been found in Firefox before 74.0.1
where, under certain conditions, when handling a ReadableStream, a race
condition can cause a use-after-free. Mozilla is aware of targeted
attacks in the wild abusing this flaw.
A remote attacker can execute arbitrary code on the affected host.
https://www.mozilla.org/en-US/security/advisories/mfsa2020-11/
https://www.mozilla.org/en-US/security/advisories/mfsa2020-11/#CVE-2020-6819
https://bugzilla.mozilla.org/show_bug.cgi?id=1620818
https://www.mozilla.org/en-US/security/advisories/mfsa2020-11/#CVE-2020-6820
https://bugzilla.mozilla.org/show_bug.cgi?id=1626728
https://security.archlinux.org/CVE-2020-6819
https://security.archlinux.org/CVE-2020-6820
bugzilla.mozilla.org/show_bug.cgi?id=1620818
bugzilla.mozilla.org/show_bug.cgi?id=1626728
security.archlinux.org/AVG-1125
security.archlinux.org/CVE-2020-6819
security.archlinux.org/CVE-2020-6820
www.mozilla.org/en-US/security/advisories/mfsa2020-11/
www.mozilla.org/en-US/security/advisories/mfsa2020-11/#CVE-2020-6819
www.mozilla.org/en-US/security/advisories/mfsa2020-11/#CVE-2020-6820
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%