Ubuntu.comUB:CVE-2021-23995CVE-2021-23995
8.8 High
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
5.1 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
61.6%
When Responsive Design Mode was enabled, it used references to objects that
were previously freed. We presume that with enough effort this could have
been exploited to run arbitrary code. This vulnerability affects Firefox
ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | firefox | < 88.0+build2-0ubuntu0.18.04.2 | UNKNOWN |
| ubuntu | 20.04 | noarch | firefox | < 88.0+build2-0ubuntu0.20.04.1 | UNKNOWN |
| ubuntu | 20.10 | noarch | firefox | < 88.0+build2-0ubuntu0.20.10.1 | UNKNOWN |
| ubuntu | 21.04 | noarch | firefox | < 88.0+build2-0ubuntu0.21.04.1 | UNKNOWN |
| ubuntu | 21.10 | noarch | firefox | < 88.0.1+build1-0ubuntu2 | UNKNOWN |
| ubuntu | 22.04 | noarch | firefox | < 88.0.1+build1-0ubuntu2 | UNKNOWN |
| ubuntu | 22.10 | noarch | firefox | < 88.0.1+build1-0ubuntu2 | UNKNOWN |
| ubuntu | 23.04 | noarch | firefox | < 88.0.1+build1-0ubuntu2 | UNKNOWN |
| ubuntu | 23.10 | noarch | firefox | < 88.0.1+build1-0ubuntu2 | UNKNOWN |
| ubuntu | 24.04 | noarch | firefox | < 88.0.1+build1-0ubuntu2 | UNKNOWN |
References
launchpad.net/bugs/cve/CVE-2021-23995
nvd.nist.gov/vuln/detail/CVE-2021-23995
security-tracker.debian.org/tracker/CVE-2021-23995
ubuntu.com/security/notices/USN-4926-1
ubuntu.com/security/notices/USN-4995-1
ubuntu.com/security/notices/USN-4995-2
www.cve.org/CVERecord?id=CVE-2021-23995
www.mozilla.org/en-US/security/advisories/mfsa2021-14/#CVE-2021-23995
www.mozilla.org/en-US/security/advisories/mfsa2021-15/#CVE-2021-23995
www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-23995
Related
8.8 High
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
5.1 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
61.6%