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CVE-2021-23986 Details

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NameCVE-2021-23986
StatusCandidate
DescriptionA 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.
ReferencesGENTOO:GLSA-202104-10
URL: https://security.gentoo.org/glsa/202104-10
MISC: https://bugzilla.mozilla.org/show_bug.cgi?id=1692623
URL: https://bugzilla.mozilla.org/show_bug.cgi?id=1692623
MISC: https://www.mozilla.org/security/advisories/mfsa2021-10/
URL: https://www.mozilla.org/security/advisories/mfsa2021-10/
PhaseAssigned (20210113)
VotesNone (candidate not yet proposed)
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