Path traversal in tar - CVE-2021-37712

Vulnerability identifier: #VU58203

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2021-37712

CWE-ID: CWE-22

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
tar
Gentoo Linux
Red Hat Enterprise Linux for x86_64
Anolis OS
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
SUSE Linux Enterprise Module for Web Scripting
QRadar Pulse App
Red Hat Software Collections
QRadar Suite
IBM Watson Machine Learning Accelerator
QRadar Deployment Intelligence App
IBM Edge Application Manager
node-tar (Debian package)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
rh-nodejs12-nodejs (Red Hat package)
rh-nodejs14-nodejs-nodemon (Red Hat package)
nodejs-nodemon
npm
nodejs12
nodejs12-docs
nodejs12-devel
nodejs12-debugsource
nodejs12-debuginfo
npm12
nodejs14-docs
nodejs14-devel
npm14
nodejs14-debugsource
nodejs14-debuginfo
nodejs14
rh-nodejs14-nodejs (Red Hat package)
nodejs
nodejs-devel
nodejs-full-i18n
nodejs-docs
nodejs-packaging
IBM Security Verify Governance
QRadar User Behavior Analytics
SINEC INS
IBM Cloud Pak System
IBM QRadar Data Synchronization App
OpenShift Data Foundation (formerly OpenShift Container Storage)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when extracting tar files that contained two directories and a symlink with names containing unicode values that normalized to the same value. A remote attacker can create a specially crafted archive that, when extracted, can overwrite arbitrary files on the system.

Install update from vendor's website.

• https://github.com/npm/node-tar/security/advisories/GHSA-qq89-hq3f-393p