CVE-2021-38503

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

CVSS v3.0 10.0 CRITICAL
CVSS v2.0 7.5 HIGH

10.0^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.mozilla.org/security/advisories/mfsa2021-50/	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1729517	Issue Tracking Permissions Required Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-49/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-48/	Vendor Advisory
https://www.debian.org/security/2021/dsa-5026	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html	Mailing List Third Party Advisory
https://www.debian.org/security/2022/dsa-5034	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202202-03	Third Party Advisory
https://security.gentoo.org/glsa/202208-14	Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:firefox_esr::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

Configuration 2 (hide)

OR	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:11.0:::::::*

Information

Published : 2021-12-08 14:15

Updated : 2022-12-09 07:21

NVD link : CVE-2021-38503

Mitre link : CVE-2021-38503

JSON object : View

CWE

CWE-863

Incorrect Authorization

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Products Affected

mozilla

firefox
firefox_esr
thunderbird

debian

debian_linux

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