CVE-2021-23999 (GCVE-0-2021-23999)

Vulnerability from cvelistv5 – Published: 2021-06-24 13:25 – Updated: 2024-08-03 19:14
VLAI?
Summary
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Severity ?
No CVSS data available.
CWE
  • Blob URLs may have been granted additional privileges
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox ESR Affected: unspecified , < 78.10 (custom)
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    Mozilla Thunderbird Affected: unspecified , < 78.10 (custom)
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    Mozilla Firefox Affected: unspecified , < 88 (custom)
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.