Ubuntu.comUB:CVE-2021-23973CVE-2021-23973
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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
0.012 Low
EPSS
Percentile
85.3%
When trying to load a cross-origin resource in an audio/video context a
decoding error may have resulted, and the content of that error may have
revealed information about the resource. This vulnerability affects Firefox
< 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
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=1690976
launchpad.net/bugs/cve/CVE-2021-23973
nvd.nist.gov/vuln/detail/CVE-2021-23973
security-tracker.debian.org/tracker/CVE-2021-23973
ubuntu.com/security/notices/USN-4756-1
ubuntu.com/security/notices/USN-4936-1
www.cve.org/CVERecord?id=CVE-2021-23973
www.mozilla.org/en-US/security/advisories/mfsa2021-07/#CVE-2021-23973
www.mozilla.org/en-US/security/advisories/mfsa2021-08/#CVE-2021-23973
www.mozilla.org/en-US/security/advisories/mfsa2021-09/#CVE-2021-23973
www.mozilla.org/security/advisories/mfsa2021-07/
www.mozilla.org/security/advisories/mfsa2021-08/
www.mozilla.org/security/advisories/mfsa2021-09/
Related
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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
0.012 Low
EPSS
Percentile
85.3%