CVE-2018-1048: red hat, inc. undertow as shipped in jboss eap 7.1.0.ga Path Traversal

Vulnerability summary

CVE-2018-1048 is a high (CVSS 7.5) Path Traversal vulnerability in red hat, inc. undertow as shipped in jboss eap 7.1.0.ga. EPSS estimates a 1.59% chance of exploitation in the next 30 days, higher than 75.2% of scored vulnerabilities.

Timeline

1. 24-01-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

It was found that the AJP connector in undertow, as shipped in Jboss EAP 7.1.0.GA, does not use the ALLOW_ENCODED_SLASH option and thus allow the the slash / anti-slash characters encoded in the url which may lead to path traversal and result in the information disclosure of arbitrary local files.

• 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.
• CWE-116Improper Encoding or Escaping of OutputThe product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.