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[email protected]CVE-2020-6820

HistoryApr 24, 2020 - 4:15 p.m.

CVE-2020-6820

2020-04-2416:15:00

CWE-362

[email protected]

web.nvd.nist.gov

1043

In Wild

cve-2020-6820

thunderbird

firefox

readablestream

race condition

use-after-free

nvd

vulnerability

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.2 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.009 Low

EPSS

Percentile

82.4%

JSON

Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.

VendorProductVersionCPE
mozillathunderbird*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
mozillafirefox*cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozillafirefox_esr*cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
mozilla	thunderbird	*	cpe:2.3:a:mozilla:thunderbird::::::::
mozilla	firefox	*	cpe:2.3:a:mozilla:firefox::::::::
mozilla	firefox_esr	*	cpe:2.3:a:mozilla:firefox_esr::::::::