Debian Security Bug TrackerDEBIANCVE:CVE-2021-38503CVE-2021-38503
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.007 Low
EPSS
Percentile
80.2%
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 999 | all | firefox | < 94.0-1 | firefox_94.0-1_all.deb |
| Debian | 12 | all | firefox-esr | < 91.3.0esr-1 | firefox-esr_91.3.0esr-1_all.deb |
| Debian | 11 | all | firefox-esr | < 91.4.1esr-1~deb11u1 | firefox-esr_91.4.1esr-1~deb11u1_all.deb |
| Debian | 10 | all | firefox-esr | < 91.3.0esr-1 | firefox-esr_91.3.0esr-1_all.deb |
| Debian | 999 | all | firefox-esr | < 91.3.0esr-1 | firefox-esr_91.3.0esr-1_all.deb |
| Debian | 13 | all | firefox-esr | < 91.3.0esr-1 | firefox-esr_91.3.0esr-1_all.deb |
| Debian | 12 | all | thunderbird | < 1:91.3.0-1 | thunderbird_1:91.3.0-1_all.deb |
| Debian | 11 | all | thunderbird | < 1:91.4.1-1~deb11u1 | thunderbird_1:91.4.1-1~deb11u1_all.deb |
| Debian | 10 | all | thunderbird | < 1:91.4.1-1~deb10u1 | thunderbird_1:91.4.1-1~deb10u1_all.deb |
| Debian | 999 | all | thunderbird | < 1:91.3.0-1 | thunderbird_1:91.3.0-1_all.deb |
Related
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.007 Low
EPSS
Percentile
80.2%