CVE-2021-29987 — Improper Restriction of Excessive Authentication Attempts in Mozilla Firefox
Severity
6.5MEDIUMNVD
OSV8.8
EPSS
0.3%
top 45.77%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedAug 17
Latest updateMay 24
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 2.8 | Impact: 3.6
Affected Packages9 packages
🔴Vulnerability Details
3GHSA▶
GHSA-h5xx-jcpx-5hr9: After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be displayed in a different position↗2022-05-24
OSV▶
CVE-2021-29987: After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be displayed in a different position↗2021-08-11
📋Vendor Advisories
5Debian▶
CVE-2021-29987: firefox - After requesting multiple permissions, and closing the first permission panel, s...↗2021