CVE-2020-12393

Description

The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP method of a request, which can be controlled by the website. If a user used the 'Copy as cURL' feature and pasted the command into a terminal, it could have resulted in command injection and arbitrary command execution. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.48%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2020-18/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2020-16/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2020-17/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1615471 permissions required

Frequently Asked Questions

What is the severity of CVE-2020-12393?
CVE-2020-12393 has been scored as a high severity vulnerability.
How to fix CVE-2020-12393?
To fix CVE-2020-12393, 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-2020-12393 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-12393 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-2020-12393?
CVE-2020-12393 affects Mozilla Firefox ESR, Mozilla Firefox, Mozilla Thunderbird.
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