CVE-2020-15667

Description

When processing a MAR update file, after the signature has been validated, an invalid name length could result in a heap overflow, leading to memory corruption and potentially arbitrary code execution. Within Firefox as released by Mozilla, this issue is only exploitable with the Mozilla-controlled signing key. This vulnerability affects Firefox < 80.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.89% Top 30%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2020-36/ release notes vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1653371 issue tracking permissions required vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-15667?
CVE-2020-15667 has been scored as a high severity vulnerability.
How to fix CVE-2020-15667?
To fix CVE-2020-15667, 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-2020-15667 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15667 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-15667?
CVE-2020-15667 affects Mozilla Firefox.
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