CVE-2020-12406

HIGH

Description

Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1639590

https://usn.ubuntu.com/4421-1/

https://www.mozilla.org/security/advisories/mfsa2020-20/

https://www.mozilla.org/security/advisories/mfsa2020-21/

https://www.mozilla.org/security/advisories/mfsa2020-22/

Details

Source: MITRE

Published: 2020-07-09

Updated: 2020-07-22

Type: CWE-345

Risk Information

CVSS v2.0

Base Score: 9.3

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 8.6

Severity: HIGH

CVSS v3.0

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 2.8

Severity: HIGH