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CVE-2021-23969

CVSS v3.1 4.3 (Medium)
43% Progress
CVSS v2.0 4.3 (Medium)
43% Progress
EPSS 0.67 % (80th)
0.67% Progress
Affected Products 4
Advisories 27
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

Weaknesses
CWE-NVD-noinfo
CVE Status
PUBLISHED
CNA
Mozilla Corporation
Published Date
2021-02-26 02:15:12
(3 years ago)
Updated Date
2022-05-27 18:17:00
(2 years ago)

Affected Products

Debian

Mozilla

Configuration #1

    CPE23 From Up To
  Mozilla Firefox prior 86.0 version cpe:2.3:a:mozilla:firefox < 86.0
  Mozilla Firefox Esr prior 78.8 version cpe:2.3:a:mozilla:firefox_esr < 78.8
  Mozilla Thunderbird prior 78.8 version cpe:2.3:a:mozilla:thunderbird < 78.8

Configuration #2

    CPE23 From Up To
  Debian Linux 9.0 cpe:2.3:o:debian:debian_linux:9.0
  Debian Linux 10.0 cpe:2.3:o:debian:debian_linux:10.0