CVEvulnerability
CVE-2021-29987
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-08-17
- 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:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-307
Description
After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be displayed in a different position but still record a click in the default location, making it possible to trick a user into accepting a permission they did not want to. *This bug only affects Firefox on Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 91 and Thunderbird < 91.
Affected configurations
• mozilla firefox (< 91.0)
• mozilla thunderbird (< 91.0)
Related
Weakness · CWE (1)
- CWE-307 Improper Restriction of Excessive Authentication Attempts weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1716129 Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202202-03 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-33/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-36/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1716129 Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202202-03 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-33/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-36/ Vendor Advisory