Ubuntu.comUB:CVE-2021-43534CVE-2021-43534
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
6.8 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.003 Low
EPSS
Percentile
67.4%
Mozilla developers and community members reported memory safety bugs
present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed
evidence of memory corruption and we presume that with enough effort some
of these could have been exploited to run arbitrary code. This
vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR <
91.3.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | thunderbird | < 1:91.5.0+build1-0ubuntu0.18.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | thunderbird | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
References
bugzilla.mozilla.org/buglist.cgi?bug_id=1606864%2C1712671%2C1730048%2C1735152
launchpad.net/bugs/cve/CVE-2021-43534
nvd.nist.gov/vuln/detail/CVE-2021-43534
security-tracker.debian.org/tracker/CVE-2021-43534
ubuntu.com/security/notices/USN-5248-1
www.cve.org/CVERecord?id=CVE-2021-43534
www.mozilla.org/en-US/security/advisories/mfsa2021-48/#CVE-2021-43534
www.mozilla.org/en-US/security/advisories/mfsa2021-49/#CVE-2021-43534
www.mozilla.org/en-US/security/advisories/mfsa2021-50/#CVE-2021-43534
www.mozilla.org/security/advisories/mfsa2021-48/
www.mozilla.org/security/advisories/mfsa2021-49/
www.mozilla.org/security/advisories/mfsa2021-50/
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
6.8 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.003 Low
EPSS
Percentile
67.4%