Debian Security Bug TrackerDEBIANCVE:CVE-2021-43538CVE-2021-43538
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.001 Low
EPSS
Percentile
44.9%
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 999 | all | firefox | < 95.0-1 | firefox_95.0-1_all.deb |
| Debian | 12 | all | firefox-esr | < 91.4.0esr-1 | firefox-esr_91.4.0esr-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 | < 91.4.0esr-1 | firefox-esr_91.4.0esr-1_all.deb |
| Debian | 999 | all | firefox-esr | < 91.4.0esr-1 | firefox-esr_91.4.0esr-1_all.deb |
| Debian | 13 | all | firefox-esr | < 91.4.0esr-1 | firefox-esr_91.4.0esr-1_all.deb |
| Debian | 12 | all | thunderbird | < 1:91.4.0-1 | thunderbird_1:91.4.0-1_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 | < 1:91.4.0-1 | thunderbird_1:91.4.0-1_all.deb |
Related
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.001 Low
EPSS
Percentile
44.9%