CVE-2021-24000: Race Condition
A race condition with requestPointerLock() and setTimeout() could have resulted in a user interacting with one tab when they believed they were on a separate tab. In conjunction with certain elements (such as <input type="file">) this could have led to an attack where a user was confused about the origin of the webpage and potentially disclosed information they did not intend to. This vulnerability affects Firefox < 88.
Other sources
A race condition with requestPointerLock() and setTimeout() could have resulted in a user interacting with one tab when they believed they were on a separate tab. In conjunction with certain elements (such as <input type="file">) this could have led to an attack where a user was confused about the origin of the webpage and potentially disclosed information they did not intend to.
Affected Software
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is CVE-2021-24000?
CVE-2021-24000 is a vulnerability that could have resulted in a user interacting with one tab when they believed they were on a separate tab in Mozilla Firefox.
How severe is CVE-2021-24000?
CVE-2021-24000 has a severity value of 3.1, which is considered medium.
How can CVE-2021-24000 be exploited?
CVE-2021-24000 could have been exploited through a race condition with requestPointerLock() and setTimeout() in conjunction with certain elements, such as <input type="file">.
Which software is affected by CVE-2021-24000?
Mozilla Firefox versions up to exclusive 88.0 are affected by CVE-2021-24000.
How can I mitigate CVE-2021-24000?
To mitigate CVE-2021-24000, users should update Mozilla Firefox to version 88.0 or later.