Debian Security Bug TrackerDEBIANCVE:CVE-2020-12420CVE-2020-12420
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
81.8%
When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 999 | all | firefox | < 78.0-1 | firefox_78.0-1_all.deb |
| Debian | 12 | all | firefox-esr | < 68.10.0esr-1 | firefox-esr_68.10.0esr-1_all.deb |
| Debian | 11 | all | firefox-esr | < 68.10.0esr-1 | firefox-esr_68.10.0esr-1_all.deb |
| Debian | 999 | all | firefox-esr | < 68.10.0esr-1 | firefox-esr_68.10.0esr-1_all.deb |
| Debian | 13 | all | firefox-esr | < 68.10.0esr-1 | firefox-esr_68.10.0esr-1_all.deb |
| Debian | 12 | all | thunderbird | < 1:68.10.0-1 | thunderbird_1:68.10.0-1_all.deb |
| Debian | 11 | all | thunderbird | < 1:68.10.0-1 | thunderbird_1:68.10.0-1_all.deb |
| Debian | 999 | all | thunderbird | < 1:68.10.0-1 | thunderbird_1:68.10.0-1_all.deb |
| Debian | 13 | all | thunderbird | < 1:68.10.0-1 | thunderbird_1:68.10.0-1_all.deb |
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
81.8%