Ubuntu.comUB:CVE-2021-43537CVE-2021-43537
6.8 Medium
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
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
0.004 Low
EPSS
Percentile
73.8%
An incorrect type conversion of sizes from 64bit to 32bit integers allowed
an attacker to corrupt memory leading to a potentially exploitable crash.
This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and
Firefox < 95.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | firefox | < 95.0+build1-0ubuntu0.18.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | firefox | < 95.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
| ubuntu | 21.04 | noarch | firefox | < 95.0+build1-0ubuntu0.21.04.1 | UNKNOWN |
| ubuntu | 21.10 | noarch | firefox | < 95.0+build1-0ubuntu0.21.10.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | firefox | < 95.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 22.10 | noarch | firefox | < 95.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 23.04 | noarch | firefox | < 95.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 23.10 | noarch | firefox | < 95.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 24.04 | noarch | firefox | < 95.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 18.04 | noarch | mozjs38 | < any | UNKNOWN |
References
launchpad.net/bugs/cve/CVE-2021-43537
nvd.nist.gov/vuln/detail/CVE-2021-43537
security-tracker.debian.org/tracker/CVE-2021-43537
ubuntu.com/security/notices/USN-5186-1
ubuntu.com/security/notices/USN-5246-1
ubuntu.com/security/notices/USN-5248-1
www.cve.org/CVERecord?id=CVE-2021-43537
www.mozilla.org/en-US/security/advisories/mfsa2021-52/#CVE-2021-43537
www.mozilla.org/en-US/security/advisories/mfsa2021-53/#CVE-2021-43537
www.mozilla.org/en-US/security/advisories/mfsa2021-54/#CVE-2021-43537
Related
6.8 Medium
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
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
0.004 Low
EPSS
Percentile
73.8%