CVE-2020-12387

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

CVSS v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.mozilla.org/security/advisories/mfsa2020-17/	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-18/	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-16/	Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1545345	Issue Tracking Permissions Required
https://usn.ubuntu.com/4373-1/	Broken Link
https://security.gentoo.org/glsa/202005-03	Third Party Advisory
https://security.gentoo.org/glsa/202005-04	Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:firefox_esr::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

Information

Published : 2020-05-26 11:15

Updated : 2021-12-14 12:23

NVD link : CVE-2020-12387

Mitre link : CVE-2020-12387

JSON object : View

CWE

CWE-416

Use After Free

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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Products Affected

mozilla

firefox
firefox_esr
thunderbird

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