Ubuntu.comUB:CVE-2021-23961CVE-2021-23961
7.4 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.009 Low
EPSS
Percentile
82.1%
Further techniques that built on the slipstream research combined with a
malicious webpage could have exposed both an internal network’s hosts as
well as services running on the user’s local machine. This vulnerability
affects Firefox < 85.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | firefox | < 85.0+build1-0ubuntu0.18.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | firefox | < 85.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
| ubuntu | 20.10 | noarch | firefox | < 85.0+build1-0ubuntu0.20.10.1 | UNKNOWN |
| ubuntu | 21.04 | noarch | firefox | < 85.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 21.10 | noarch | firefox | < 85.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 22.04 | noarch | firefox | < 85.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 22.10 | noarch | firefox | < 85.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 23.04 | noarch | firefox | < 85.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 23.10 | noarch | firefox | < 85.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 24.04 | noarch | firefox | < 85.0+build1-0ubuntu1 | UNKNOWN |
References
launchpad.net/bugs/cve/CVE-2021-23961
nvd.nist.gov/vuln/detail/CVE-2021-23961
security-tracker.debian.org/tracker/CVE-2021-23961
ubuntu.com/security/notices/USN-4717-1
ubuntu.com/security/notices/USN-4995-1
ubuntu.com/security/notices/USN-4995-2
www.cve.org/CVERecord?id=CVE-2021-23961
www.mozilla.org/en-US/security/advisories/mfsa2021-03/#CVE-2021-23961
Related
7.4 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.009 Low
EPSS
Percentile
82.1%