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CVE-2021-38503
AST
Critical

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing script…

CVSS
10.0
Critical
EPSS
0.04
p88
Published
2021-01-01
Updated
2021-01-01
Description

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.

Tags · CWE
Pre-auth
CWE-732
CWE-863
CAPEC-1
CAPEC-17
CAPEC-60
CAPEC-61
CAPEC-62
CAPEC-122
CAPEC-127
CAPEC-180
CAPEC-206
CAPEC-234
CAPEC-642
Affected products
FirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefox-esr
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Timeline
2021-01-01
Published
2021-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Scope
S: C
Changed (C)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.038 · p88
Known exploited (KEV)
No
MITRE ATT&CK
Inferred via CAPEC
└ via CAPEC-127 · CWE-732
└ via CAPEC-60 · CWE-732
└ via CAPEC-642 · CWE-732
└ via CAPEC-122 · CWE-732
└ via CAPEC-60 · CWE-732
└ via CAPEC-206 · CWE-732
└ via CAPEC-642 · CWE-732
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected products
ProductVendorStatus
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefox-esrTracked
Showing first 20 of 52
Source databases
AST
DEB
CVE
RED
UBU
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