Ubuntu.comUB:CVE-2021-23972CVE-2021-23972
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
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
61.3%
One phishing tactic on the web is to provide a link with HTTP Auth. For
example ‘https://[email protected]’. To mitigate this type of
attack, Firefox will display a warning dialog; however, this warning dialog
would not have been displayed if evil.com used a redirect that was cached
by the browser. This vulnerability affects Firefox < 86.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | firefox | < 86.0+build3-0ubuntu0.18.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | firefox | < 86.0+build3-0ubuntu0.20.04.1 | UNKNOWN |
| ubuntu | 20.10 | noarch | firefox | < 86.0+build3-0ubuntu0.20.10.1 | UNKNOWN |
| ubuntu | 21.04 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
| ubuntu | 21.10 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
| ubuntu | 22.04 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
| ubuntu | 22.10 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
| ubuntu | 23.04 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
| ubuntu | 23.10 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
| ubuntu | 24.04 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
References
bugzilla.mozilla.org/show_bug.cgi?id=1683536
launchpad.net/bugs/cve/CVE-2021-23972
nvd.nist.gov/vuln/detail/CVE-2021-23972
security-tracker.debian.org/tracker/CVE-2021-23972
ubuntu.com/security/notices/USN-4756-1
www.cve.org/CVERecord?id=CVE-2021-23972
www.mozilla.org/en-US/security/advisories/mfsa2021-07/#CVE-2021-23972
www.mozilla.org/security/advisories/mfsa2021-07/
Related
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
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
61.3%