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CVE-2020-8265

Date: January 6, 2021

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.

Language: JS

Severity Score

Related Resources (17)

https://access.redhat.com/security/cve/CVE-2020-8265
https://security.alpinelinux.org/vuln/CVE-2020-8265
https://nodejs.org/en/blog/vulnerability/january-2021-security-releases/
https://security-tracker.debian.org/tracker/CVE-2020-8265
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-8265
https://hackerone.com/reports/988103
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H472D5HPXN6RRXCNFML3BK5OYC52CXF2/
https://www.oracle.com/security-alerts/cpujan2021.html
https://security.netapp.com/advisory/ntap-20210212-0003/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/H472D5HPXN6RRXCNFML3BK5OYC52CXF2/
https://nvd.nist.gov/vuln/detail/CVE-2020-8265
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K4I6MZNC7C7VIDQR267OL4TVCI3ZKAC4/
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
https://www.debian.org/security/2021/dsa-4826
https://security.gentoo.org/glsa/202101-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K4I6MZNC7C7VIDQR267OL4TVCI3ZKAC4/
https://www.mend.io/vulnerability-database/CVE-2020-8265

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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