Mozilla · Firefox · CVE-2021-29968
**Name of the Vulnerable Software and Affected Versions**
Firefox versions prior to 89.0.1
**Description**
The issue is related to an out of bounds read that could occur when drawing text onto a canvas with WebRender disabled. This could allow a remote attacker to disclose protected information using a specially crafted web page. The estimated number of potentially affected devices is not specified. The issue only affects Firefox on Windows, while other operating systems are unaffected.
**Recommendations**
For versions prior to 89.0.1, update to version 89.0.1 or later to resolve the issue. As a temporary workaround, consider disabling WebRender to minimize the risk of exploitation. Restrict access to potentially vulnerable canvas elements to minimize the risk of exploitation.