The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. This vulnerability affects Firefox < 86.
References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1685145 Issue Tracking Permissions Required Vendor Advisory
https://security.gentoo.org/glsa/202104-10 Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2021-07/ Release Notes Vendor Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mozilla

Published: 2021-02-26T01:49:49

Updated: 2021-05-01T01:06:43

Reserved: 2021-01-13T00:00:00


Link: CVE-2021-23975

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2021-02-26T02:15:13.383

Modified: 2022-05-27T18:04:26.560


Link: CVE-2021-23975

JSON object: View

cve-icon Redhat Information

No data.

CWE