CVE-2023-6212

Description

Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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 < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.41%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Firefox ESR
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1658432%2C1820983%2C1829252%2C1856072%2C1856091%2C1859030%2C1860943%2C1862782 broken link
https://www.mozilla.org/security/advisories/mfsa2023-49/ release notes vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-50/ release notes vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-52/ release notes vendor advisory
https://www.debian.org/security/2023/dsa-5561 third party advisory
https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html mailing list
https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html

Frequently Asked Questions

What is the severity of CVE-2023-6212?
CVE-2023-6212 has been scored as a high severity vulnerability.
How to fix CVE-2023-6212?
To fix CVE-2023-6212, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-6212 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-6212 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-6212?
CVE-2023-6212 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird.
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