Vulnerability Monitor

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CVE-2020-12406

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.

Published

2020-07-09T15:15:11.020

Last Modified

2024-11-21T04:59:39.313

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

8.6

Impact Score

10.0

Weaknesses

Type: Primary
CWE-345

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 77.0	Yes
Application	mozilla	firefox_esr	< 68.9.0	Yes
Application	mozilla	thunderbird	< 68.9.0	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes
Operating System	canonical	ubuntu_linux	19.10	Yes
Operating System	canonical	ubuntu_linux	20.04	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1639590 Issue Tracking, Vendor Advisory ([email protected])
https://usn.ubuntu.com/4421-1/ Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-20/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-21/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-22/ Vendor Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1639590 Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4421-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-20/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-21/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-22/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)