CVEvulnerability
CVE-2021-23975
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-02-26
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-862
Description
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.
Affected configurations
• mozilla firefox (< 86.0)
Related
Weakness · CWE (1)
- CWE-862 Missing Authorization weakness
References
- 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
- 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