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Improper Restriction of Excessive Authentication Attempts Affecting firefox package, versions <91.0-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High

    Threat Intelligence

    EPSS 0.13% (47th percentile)
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NVD
6.5 medium
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SUSE
6.5 medium

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  • Snyk ID SNYK-DEBIANUNSTABLE-FIREFOX-1538500
  • published 11 Aug 2021
  • disclosed 17 Aug 2021
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Introduced: 11 Aug 2021

CVE-2021-29987 Open this link in a new tab
CWE-307 Open this link in a new tab

How to fix?

Upgrade Debian:unstable firefox to version 91.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.