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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-23969 Detail

Description

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.


Severity

 


CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  4.3 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1542194 Issue Tracking  Permissions Required  Vendor Advisory 
https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html Mailing List  Third Party Advisory 
https://security.gentoo.org/glsa/202104-09 Third Party Advisory 
https://security.gentoo.org/glsa/202104-10 Third Party Advisory 
https://www.debian.org/security/2021/dsa-4866 Third Party Advisory 
https://www.mozilla.org/security/advisories/mfsa2021-07/ Release Notes  Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2021-08/ Release Notes  Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2021-09/ Release Notes  Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-23969
NVD Published Date:
02/25/2021
NVD Last Modified:
05/27/2022
Source:
Mozilla Corporation