4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.001 Low
EPSS
Percentile
50.7%
Due to an unusual sequence of attacker-controlled events, a Javascript
alert() dialog with arbitrary (although unstyled) contents could be
displayed over top an uncontrolled webpage of the attacker’s choosing. This
vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR <
91.3.
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | firefox | < 94.0+build3-0ubuntu0.18.04.1 | UNKNOWN |
ubuntu | 20.04 | noarch | firefox | < 94.0+build3-0ubuntu0.20.04.1 | UNKNOWN |
ubuntu | 21.04 | noarch | firefox | < 94.0+build3-0ubuntu0.21.04.1 | UNKNOWN |
ubuntu | 21.10 | noarch | firefox | < 94.0+build3-0ubuntu0.21.10.1 | UNKNOWN |
ubuntu | 22.04 | noarch | firefox | < 94.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 22.10 | noarch | firefox | < 94.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 23.04 | noarch | firefox | < 94.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 23.10 | noarch | firefox | < 94.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 24.04 | noarch | firefox | < 94.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 18.04 | noarch | mozjs38 | < any | UNKNOWN |
launchpad.net/bugs/cve/CVE-2021-38509
nvd.nist.gov/vuln/detail/CVE-2021-38509
security-tracker.debian.org/tracker/CVE-2021-38509
ubuntu.com/security/notices/USN-5131-1
ubuntu.com/security/notices/USN-5152-1
ubuntu.com/security/notices/USN-5248-1
www.cve.org/CVERecord?id=CVE-2021-38509
www.mozilla.org/en-US/security/advisories/mfsa2021-48/#CVE-2021-38509
www.mozilla.org/en-US/security/advisories/mfsa2021-49/#CVE-2021-38509
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.001 Low
EPSS
Percentile
50.7%