Paulo Lopes

5 exploits Active since Oct 2020
CVE-2020-35217 NOMISEC HIGH WORKING POC
Vert.x-Web 4.0.0-milestone1-4.0.0-milestone4 - Cross-Site Request Forgery via Incorrect Token Verification
Vert.x-Web framework v4.0 milestone 1-4 does not perform a correct CSRF verification. Instead of comparing the CSRF token in the request with the CSRF token in the cookie, it compares the CSRF token in the cookie against a CSRF token that is stored in the session. An attacker does not even need to provide a CSRF token in the request because the framework does not consider it. The cookies are automatically sent by the browser and the verification will always succeed, leading to a successful CSRF attack.
CVSS 8.8
CVE-2020-35217 NOMISEC HIGH WORKING POC
Vert.x-Web 4.0.0-milestone1-4.0.0-milestone4 - Cross-Site Request Forgery via Incorrect Token Verification
Vert.x-Web framework v4.0 milestone 1-4 does not perform a correct CSRF verification. Instead of comparing the CSRF token in the request with the CSRF token in the cookie, it compares the CSRF token in the cookie against a CSRF token that is stored in the session. An attacker does not even need to provide a CSRF token in the request because the framework does not consider it. The cookies are automatically sent by the browser and the verification will always succeed, leading to a successful CSRF attack.
CVSS 8.8
CVE-2019-17640 NOMISEC CRITICAL WRITEUP
Eclipse Vert.x 3.4.0-3.9.4 - Path Traversal via StaticHandler on Windows
In Eclipse Vert.x 3.4.x up to 3.9.4, 4.0.0.milestone1, 4.0.0.milestone2, 4.0.0.milestone3, 4.0.0.milestone4, 4.0.0.milestone5, 4.0.0.Beta1, 4.0.0.Beta2, and 4.0.0.Beta3, StaticHandler doesn't correctly processes back slashes on Windows Operating systems, allowing, escape the webroot folder to the current working directory.
CVSS 9.8
CVE-2023-24815 WRITEUP MEDIUM WRITEUP
Eclipse Vert.x-Web 4.0.0-4.3.7 - Path Traversal via StaticHandler on Windows
Vert.x-Web is a set of building blocks for building web applications in the java programming language. When running vertx web applications that serve files using `StaticHandler` on Windows Operating Systems and Windows File Systems, if the mount point is a wildcard (`*`) then an attacker can exfiltrate any class path resource. When computing the relative path to locate the resource, in case of wildcards, the code: `return "/" + rest;` from `Utils.java` returns the user input (without validation) as the segment to lookup. Even though checks are performed to avoid escaping the sandbox, given that the input was not sanitized `\` are not properly handled and an attacker can build a path that is valid within the classpath. This issue only affects users deploying in windows environments and upgrading is the advised remediation path. There are no known workarounds for this vulnerability.
CVSS 4.8
CVE-2023-24815 WRITEUP MEDIUM WRITEUP
Eclipse Vert.x-Web 4.0.0-4.3.7 - Path Traversal via StaticHandler on Windows
Vert.x-Web is a set of building blocks for building web applications in the java programming language. When running vertx web applications that serve files using `StaticHandler` on Windows Operating Systems and Windows File Systems, if the mount point is a wildcard (`*`) then an attacker can exfiltrate any class path resource. When computing the relative path to locate the resource, in case of wildcards, the code: `return "/" + rest;` from `Utils.java` returns the user input (without validation) as the segment to lookup. Even though checks are performed to avoid escaping the sandbox, given that the input was not sanitized `\` are not properly handled and an attacker can build a path that is valid within the classpath. This issue only affects users deploying in windows environments and upgrading is the advised remediation path. There are no known workarounds for this vulnerability.
CVSS 4.8