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CVE-2020-12420 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html CVEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html CVEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html CVEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html CVEMailing ListThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1643437 CVEExploitIssue TrackingVendor Advisory

see all 22 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')[email protected]
CWE-416Use After Free[email protected]

Affected Products

ProductVersions
mozilla firefox
< 78.0

CPE

  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
mozilla firefox esr
< 68.10.0

CPE

  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
mozilla thunderbird
< 68.10.0

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
canonical ubuntu linux
16.04
18.04
19.10
20.04

CPE

  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*

Remediation

  • No remediation found in references.
opensuse leap
15.1
15.2

CPE

  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
  • cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

11 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2020-12420
NVD Published Date:
Jul 9, 2020
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2020-12420 Details - Not Deferred