CVE-2021-23968

Published on: 02/25/2021 12:00:00 AM UTC

Last Modified on: 05/27/2022 05:57:00 PM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Certain versions of Debian Linux from Debian contain the following vulnerability:

If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

  • CVE-2021-23968 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.
  • Affected Vendor/Software: URL Logo Mozilla - Firefox version < 86
  • Affected Vendor/Software: URL Logo Mozilla - Thunderbird version < 78.8
  • Affected Vendor/Software: URL Logo Mozilla - Firefox ESR version < 78.8

CVSS3 Score: 4.3 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE REQUIRED
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED LOW NONE NONE

CVSS2 Score: 4.3 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK MEDIUM NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL NONE NONE

CVE References

Description Tags Link
Mozilla Firefox: Multiple vulnerabilities (GLSA 202104-10) — Gentoo security security.gentoo.org
text/html
URL Logo GENTOO GLSA-202104-10
Debian -- Security Information -- DSA-4866-1 thunderbird Third Party Advisory
www.debian.org
Depreciated Link
text/html
URL Logo DEBIAN DSA-4866
Mozilla Thunderbird: Multiple vulnerabilities (GLSA 202104-09) — Gentoo security security.gentoo.org
text/html
URL Logo GENTOO GLSA-202104-09
Security Vulnerabilities fixed in Firefox 86 — Mozilla Release Notes
Vendor Advisory
www.mozilla.org
text/html
URL Logo MISC www.mozilla.org/security/advisories/mfsa2021-07/
Security Vulnerabilities fixed in Firefox ESR 78.8 — Mozilla Release Notes
Vendor Advisory
www.mozilla.org
text/html
URL Logo MISC www.mozilla.org/security/advisories/mfsa2021-08/
Security Vulnerabilities fixed in Thunderbird 78.8 — Mozilla Release Notes
Vendor Advisory
www.mozilla.org
text/html
URL Logo MISC www.mozilla.org/security/advisories/mfsa2021-09/
[SECURITY] [DLA 2578-1] thunderbird security update Mailing List
Third Party Advisory
lists.debian.org
text/html
URL Logo MLIST [debian-lts-announce] 20210301 [SECURITY] [DLA 2578-1] thunderbird security update
Access Denied Issue Tracking
Permissions Required
Vendor Advisory
bugzilla.mozilla.org
text/html
URL Logo MISC bugzilla.mozilla.org/show_bug.cgi?id=1687342

Related QID Numbers

  • 179944 Debian Security Update for firefox-esrthunderbird (CVE-2021-23968)
  • 198355 Ubuntu Security Notification for Thunderbird vulnerabilities (USN-4936-1)
  • 352250 Amazon Linux Security Advisory for thunderbird: ALAS2-2021-1618
  • 375430 SeaMonkey Multiple Vulnerabilities
  • 500941 Alpine Linux Security Update for firefox-esr
  • 501555 Alpine Linux Security Update for firefox
  • 502379 Alpine Linux Security Update for thunderbird
  • 630669 Mozilla Firefox for Android and iOS Multiple Vulnerabilities (MFSA2021-07)
  • 710019 Gentoo Linux Mozilla Thunderbird Multiple Vulnerabilities (GLSA 202104-09)
  • 710020 Gentoo Linux Mozilla Firefox Multiple Vulnerabilities (GLSA 202104-10)
  • 750329 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2021:0387-1)
  • 750336 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2021:0373-1)
  • 940157 AlmaLinux Security Update for thunderbird (ALSA-2021:0657)
  • 940358 AlmaLinux Security Update for firefox (ALSA-2021:0655)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
DebianDebian Linux10.0AllAllAll
Operating
System
DebianDebian Linux9.0AllAllAll
Operating
System
DebianDebian Linux10.0AllAllAll
Operating
System
DebianDebian Linux9.0AllAllAll
ApplicationMozillaFirefoxAllAllAllAll
ApplicationMozillaFirefoxAllAllAllAll
ApplicationMozillaFirefox EsrAllAllAllAll
ApplicationMozillaFirefox EsrAllAllAllAll
ApplicationMozillaThunderbirdAllAllAllAll
ApplicationMozillaThunderbirdAllAllAllAll
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*:
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @LinInfoSec Firefox - CVE-2021-23968: bugzilla.mozilla.org/show_bug.cgi?i… 2022-05-27 19:01:55
Twitter Icon @RemotelyAlerts Severity: ?? | If Content Security Policy blocked frame... | CVE-2021-23968 | Link for more: alerts.remotelyrmm.com/CVE-2021-23968 2022-05-27 19:35:30
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