CVE Vulnerabilities

CVE-2021-22940

Use After Free

Published: Aug 16, 2021 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Ubuntu
LOW
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Node.js before 16.6.1, 14.17.5, and 12.22.5 is vulnerable to a use after free attack where an attacker might be able to exploit the memory corruption, to change process behavior.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

NameVendorStart VersionEnd Version
Node.jsNodejs12.0.0 (including)12.22.5 (excluding)
Node.jsNodejs14.0.0 (including)14.17.5 (excluding)
Node.jsNodejs16.0.0 (including)16.6.2 (excluding)
Red Hat Enterprise Linux 8RedHatnodejs:12-8040020210817133458.522a0ee4*
Red Hat Enterprise Linux 8RedHatnodejs:14-8040020210817165654.522a0ee4*
Red Hat Enterprise Linux 8.1 Extended Update SupportRedHatnodejs:12-8010020210817113128.c27ad7f8*
Red Hat Enterprise Linux 8.2 Extended Update SupportRedHatnodejs:12-8020020210817125332.4cda2c84*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nodejs14-nodejs-0:14.17.5-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nodejs12-nodejs-0:12.22.5-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nodejs12-nodejs-nodemon-0:2.0.3-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-nodejs14-nodejs-0:14.17.5-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-nodejs12-nodejs-0:12.22.5-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-nodejs12-nodejs-nodemon-0:2.0.3-5.el7*
NodejsUbuntubionic*
NodejsUbuntuhirsute*
NodejsUbuntuimpish*
NodejsUbuntukinetic*
NodejsUbuntutrusty*
NodejsUbuntutrusty/esm*
NodejsUbuntuupstream*
NodejsUbuntuxenial*

Potential Mitigations

References