PT-2021-15626 · Mozilla+7 · Firefox+9
Masato Kinugawa
·
Published
2021-02-23
·
Updated
2024-12-12
·
CVE-2021-23969
CVSS v3.1
4.3
Medium
| Vector | AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
Name of the Vulnerable Software and Affected Versions:
Firefox versions prior to 86
Thunderbird versions prior to 78.8
Firefox ESR versions prior to 78.8
Description:
The issue arises when creating a violation report, as specified in the W3C Content Security Policy draft. Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects, potentially leading to unintentional leakage. This was fixed to be the redirect destination's origin.
Recommendations:
For Firefox versions prior to 86, update to version 86 or later to resolve the issue.
For Thunderbird versions prior to 78.8, update to version 78.8 or later to resolve the issue.
For Firefox ESR versions prior to 78.8, update to version 78.8 or later to resolve the issue.
Exploit
Fix
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Related Identifiers
Affected Products
Alt Linux
Astra Linux
Centos
Firefox
Firefox Esr
Linuxmint
Red Hat
Suse
Thunderbird
Ubuntu