CVE-2020-12393: Command Injection
First published: Tue May 05 2020(Updated: )
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.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Thunderbird | <68.8 | 68.8 |
| Firefox | <76 | 76 |
| Firefox ESR | <68.8 | 68.8 |
| Firefox | <76.0 | |
| Firefox ESR | <68.8.0 | |
| Thunderbird | <68.8.0 | |
| Microsoft Windows Operating System |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1615471
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-17/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-16/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-17/#CVE-2020-12387
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/
- https://www.mozilla.org/security/advisories/mfsa2020-16/
- https://www.mozilla.org/security/advisories/mfsa2020-17/
- https://www.mozilla.org/security/advisories/mfsa2020-18/
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.
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