CVE-2020-8265

Description

Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 are vulnerable to a use-after-free bug in its TLS implementation. When writing to a TLS enabled socket, node::StreamBase::Write calls node::TLSWrap::DoWrite with a freshly allocated WriteWrap object as first argument. If the DoWrite method does not return an error, this object is passed back to the caller as part of a StreamWriteResult structure. This may be exploited to corrupt memory leading to a Denial of Service or potentially other exploits.

How to fix CVE-2020-8265

To remediate CVE-2020-8265, upgrade the affected package to a fixed version below.

—upgrade to 12.20.1-r0 or later
—upgrade to 10.23.1 or later
—upgrade to 10.23.1 or later
—upgrade to 12.20.1~dfsg-1 or later
—upgrade to 10.23.1~dfsg-1~deb10u1 or later

Is CVE-2020-8265 being exploited?

Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

from 0, < 12.20.1-r0
>= 10.0.0, < 10.23.1, >= 12.0.0, < 12.20.1, >= 14.0.0, < 14.15.4, >= 15.0.0, < 15.5.1
>= 10.0.0, < 10.23.1, >= 12.0.0, < 12.20.1, >= 14.0.0, < 14.15.4, >= 15.0.0, < 15.5.1
from 0, < 12.20.1~dfsg-1
from 0, < 10.23.1~dfsg-1~deb10u1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	HIGH8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H