CVE-2023-39957: nextcloud security-advisories Path Traversal

Vulnerability summary

CVE-2023-39957 is a high (CVSS 7.8) Path Traversal vulnerability in nextcloud security-advisories. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.1% of scored vulnerabilities.

Timeline

1. 10-08-2023
   PublishedVulnerability first disclosed.
2. 04-10-2024
   Last modifiedVulnerability information updated.

Description

Nextcloud Talk Android allows users to place video and audio calls through Nextcloud on Android. Prior to version 17.0.0, an unprotected intend allowed malicious third party apps to trick the Talk Android app into writing files outside of its intended cache directory. Nextcloud Talk Android version 17.0.0 has a patch for this issue. No known workarounds are available.

• 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.