CVE-2020-6820

HighKnown Exploited

Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in…

mozilla·CWE-362·Published 2020-04-24

CVSS

8.1

EPSS

0.06

KEV

Yes

Exploits

cve.orgen

259 chars

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.

NVDen

259 chars

NVDes

385 chars

Bajo determinadas condiciones, cuando se maneja un ReadableStream, una condición de carrera puede causar un uso de la memoria previamente liberada. Somos conscientes de los ataques dirigidos "in the wild" que abusan de este fallo. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.7.0, Firefox versiones anteriores a 74.0.1 y Firefox ESR versiones anteriores a 68.6.1.

CVSS metrics across sources

Version	Type	Source	Base	Exp	Impact	Vector
2.0	Primary	NVD	6.8	8.6	6.4	AV:N/AC:M/Au:N/C:P/I:P/A:P
3.1	Primary	cve.org	8.1	—	—	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1	Primary	NVD	8.1	2.2	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1	Secondary	NVD	8.1	2.2	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H