CVE-2020-12420

CVSS V2 High 9.3 CVSS V3 High 8.8
Description
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.
Overview
  • CVE ID
  • CVE-2020-12420
  • Assigner
  • security@mozilla.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-07-09T15:15:11
  • Last Modified Date
  • 2022-05-03T13:00:28
Weakness Enumerations
CWE URL
CWE-362 http://cwe.mitre.org/data/definitions/362.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* 1 OR 78.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* 1 OR 68.10.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* 1 OR 68.10.0
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 9.3
  • Severity
  • HIGH
  • Exploitability Score
  • 8.6
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1643437 Exploit Issue Tracking Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-24/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-25/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-26/ Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html Mailing List Third Party Advisory
https://usn.ubuntu.com/4421-1/ Third Party Advisory
https://security.gentoo.org/glsa/202007-10 Third Party Advisory
https://security.gentoo.org/glsa/202007-09 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-12420
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12420
History
Created Old Value New Value Data Type Notes
2022-05-08 06:20:05 Added to TrackCVE
2022-12-04 19:19:40 2020-07-09T15:15Z 2020-07-09T15:15:11 CVE Published Date updated
2022-12-04 19:19:40 2022-05-03T13:00:28 CVE Modified Date updated
2022-12-04 19:19:40 Analyzed Vulnerability Status updated