CVE-2021-23969

Name
CVE-2021-23969
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.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

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

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* firefox >= None < 86.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* firefox_esr >= None < 78.8
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* thunderbird >= None < 78.8

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
thunderbird edge-community 78.9.0-r0 None fixed
thunderbird edge-community 78.7.0-r0 None possibly vulnerable
thunderbird edge-community 78.6.1-r0 None possibly vulnerable
thunderbird edge-community 78.5.1-r0 None possibly vulnerable
thunderbird edge-community 68.10.0-r0 None possibly vulnerable
thunderbird edge-community 68.9.0-r0 None possibly vulnerable
thunderbird edge-community 68.8.0-r0 None possibly vulnerable
thunderbird edge-community 68.7.0-r0 None possibly vulnerable
thunderbird edge-community 68.6.0-r0 None possibly vulnerable
thunderbird edge-community 68.5.0-r0 None possibly vulnerable
thunderbird 3.22-community 78.9.0-r0 None fixed
thunderbird 3.22-community 78.7.0-r0 None possibly vulnerable
thunderbird 3.22-community 78.6.1-r0 None possibly vulnerable
thunderbird 3.22-community 78.5.1-r0 None possibly vulnerable
thunderbird 3.22-community 68.10.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.9.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.8.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.7.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.6.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.5.0-r0 None possibly vulnerable
thunderbird 3.21-community 78.9.0-r0 None fixed
thunderbird 3.20-community 78.9.0-r0 None fixed
thunderbird 3.19-community 78.9.0-r0 None fixed
thunderbird 3.18-community 78.9.0-r0 None fixed
thunderbird 3.17-community 78.9.0-r0 None fixed
librewolf edge-community 87.0-r0 None fixed
librewolf 3.22-community 87.0-r0 None fixed
librewolf 3.21-community 87.0-r0 None fixed
firefox-esr edge-community 78.8.0-r0 None fixed
firefox-esr 3.22-community 78.8.0-r0 None fixed
firefox-esr 3.21-community 78.8.0-r0 None fixed
firefox-esr 3.20-community 78.8.0-r0 None fixed
firefox-esr 3.19-community 78.8.0-r0 None fixed
firefox-esr 3.18-community 78.8.0-r0 None fixed
firefox-esr 3.17-community 78.8.0-r0 None fixed
firefox edge-community 87.0-r0 None fixed
firefox edge-community 85.0-r0 None fixed
firefox edge-community 84.0.2-r0 None fixed
firefox edge-community 84.0.1-r0 None fixed
firefox edge-community 83.0-r0 None fixed
firefox edge-community 82.0.3-r0 None fixed
firefox edge-community 82.0-r0 None fixed
firefox edge-community 81.0-r0 None fixed
firefox edge-community 80.0-r0 None fixed
firefox edge-community 79.0-r0 None fixed
firefox edge-community 78.0-r0 None possibly vulnerable
firefox edge-community 77.0-r0 None possibly vulnerable
firefox edge-community 76.0-r0 None possibly vulnerable
firefox edge-community 75.0-r0 None possibly vulnerable
firefox edge-community 74.0.1-r0 None possibly vulnerable
firefox edge-community 74.0-r0 None possibly vulnerable
firefox edge-community 71.0.1-r0 None possibly vulnerable
firefox edge-community 70.0-r0 None possibly vulnerable
firefox edge-community 68.0.2-r0 None possibly vulnerable
firefox 3.22-community 87.0-r0 None fixed
firefox 3.22-community 85.0-r0 None fixed
firefox 3.22-community 84.0.2-r0 None fixed
firefox 3.22-community 84.0.1-r0 None fixed
firefox 3.22-community 83.0-r0 None fixed
firefox 3.22-community 82.0.3-r0 None fixed
firefox 3.22-community 82.0-r0 None fixed
firefox 3.22-community 81.0-r0 None fixed
firefox 3.22-community 80.0-r0 None fixed
firefox 3.22-community 79.0-r0 None fixed
firefox 3.22-community 78.0-r0 None possibly vulnerable
firefox 3.22-community 77.0-r0 None possibly vulnerable
firefox 3.22-community 76.0-r0 None possibly vulnerable
firefox 3.22-community 75.0-r0 None possibly vulnerable
firefox 3.22-community 74.0.1-r0 None possibly vulnerable
firefox 3.22-community 74.0-r0 None possibly vulnerable
firefox 3.22-community 71.0.1-r0 None possibly vulnerable
firefox 3.22-community 70.0-r0 None possibly vulnerable
firefox 3.22-community 68.0.2-r0 None possibly vulnerable
firefox 3.21-community 87.0-r0 None fixed
firefox 3.20-community 87.0-r0 None fixed
firefox 3.19-community 87.0-r0 None fixed
firefox 3.18-community 87.0-r0 None fixed
firefox 3.17-community 87.0-r0 None fixed