Origin Validation Error Affecting firefox package, versions <87.0-1
Snyk CVSS
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-FIREFOX-1088408
- published 24 Mar 2021
- disclosed 31 Mar 2021
Introduced: 24 Mar 2021
CVE-2021-23986 Open this link in a new tabHow to fix?
Upgrade Debian:unstable
firefox
to version 87.0-1 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.
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.