CVE-2021-23986 (GCVE-0-2021-23986)

Vulnerability from cvelistv5 – Published: 2021-03-31 13:41 – Updated: 2024-08-03 19:14
VLAI
Summary
A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox < 87.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • A malicious extension could have performed credential-less same origin policy violations
Assigner
mozilla CNA under the mitre root
CNA scorecard E 38/100 over 679 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Mozilla Firefox Affected: unspecified , < 87 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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