Vulnerability Monitor

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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.

Published

2020-05-26T18:15:10.980

Last Modified

2024-11-21T04:59:37.170

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.1 (HIGH)

CVSSv2 Vector

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

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

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-362
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 76.0	Yes
Application	mozilla	firefox_esr	< 68.8.0	Yes
Application	mozilla	thunderbird	< 68.8.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1545345 Issue Tracking, Permissions Required ([email protected])
https://security.gentoo.org/glsa/202005-03 Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202005-04 Third Party Advisory ([email protected])
https://usn.ubuntu.com/4373-1/ Broken Link ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-16/ Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-17/ Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-18/ Third Party Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1545345 Issue Tracking, Permissions Required (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202005-03 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202005-04 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4373-1/ Broken Link (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-16/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-17/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-18/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)