CVE-2020-12393: Command Injection
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.
Other sources
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Thunderbirdto a version that resolves this vulnerability.Fixed in 68.8 - Upgrade
Upgrade
Firefoxto a version that resolves this vulnerability.Fixed in 76 - Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 68.8 - Upgrade
Upgrade
alpine/firefoxto a version that resolves this vulnerability.Fixed in 76.0-r0 - Upgrade
Upgrade
alpine/firefox-esrto a version that resolves this vulnerability.Fixed in 68.8.0-r0 - Upgrade
Upgrade
alpine/librewolfto a version that resolves this vulnerability.Fixed in 76.0-r0 - Upgrade
Upgrade
alpine/mozjs68to a version that resolves this vulnerability.Fixed in 68.8.0-r0 - Upgrade
Upgrade
alpine/thunderbirdto a version that resolves this vulnerability.Fixed in 68.8.0-r0
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the severity of CVE-2020-12393?
CVE-2020-12393 is classified as medium severity due to the potential for command injection risks.
How do I fix CVE-2020-12393?
To fix CVE-2020-12393, users should update to the latest versions of Mozilla Firefox or Thunderbird, specifically to Firefox ESR 68.8 or Firefox 76.
What is the impact of CVE-2020-12393?
The impact of CVE-2020-12393 includes the possibility of arbitrary command execution if vulnerable users paste unsafe cURL commands into a terminal.
Which software versions are affected by CVE-2020-12393?
CVE-2020-12393 affects Mozilla Firefox versions prior to 76, Firefox ESR versions prior to 68.8, and Thunderbird versions prior to 68.8.
Who is the vendor of CVE-2020-12393?
The vendor of CVE-2020-12393 is Mozilla, the developer of Firefox and Thunderbird.