CVE-2021-24035: facebook whatsapp business for android Relative Path Traversal

Vulnerability summary

CVE-2021-24035 is a critical (CVSS 9.1) Relative Path Traversal vulnerability in facebook whatsapp business for android. EPSS estimates a 1.13% chance of exploitation in the next 30 days, higher than 66% of scored vulnerabilities.

Timeline

1. 11-06-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

A lack of filename validation when unzipping archives prior to WhatsApp for Android v2.21.8.13 and WhatsApp Business for Android v2.21.8.13 could have allowed path traversal attacks that overwrite WhatsApp files.

• CWE-23Relative Path TraversalThe product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.
• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.