AppCheck Security Blog

Information disclosure occurs when out-of-scope data – such as information relating to the service operation, or its operators – is returned to clients in-band through the defined data response channel (e.g HTTP responses). Typically exploiting these vulnerabilities doesn’t require an attacker to do anything other than make passive requests (those not containing a malicious payloads) or to attempt to bypass access controls – often there is therefore no “attack signature” that can be detected in logs or blocked by Web Application Firewalls, and companies may find it impossible to prosecute an attacker or prove that they performed an action that was in any way criminal.

CVE: CVE-2020-29047
Severity: HIGH
Vulnerability Type: CWE-502: Deserialization of Untrusted Data
Requires Authentication: No

This article focusses on URL parsing and the security issues surrounding it, taking a look at path traversal and how this can be employed by an attacker to cause the system to read or write files outside of the intended path scope.

In this article we go boldly beyond the OWASP Top 10 to review a few critical, interesting or just plain bizarre vulnerabilities not included in OWASP Top 10 and see how they could impact you.

In this blog post we will explore Template Injection attacks against the JsReder/JsViews library.

An XML (Extensible Markup Language) External Entity or XXE attack occurs when an attacker is able to exploit the application's processing of XML data by injecting malicious entities.