Wallarm has rolled out the update to detect and mitigate CVE-2021-44228. No additional actions are required from the customers Attempts at exploitation will be automatically blocked in a blocking mode When working in a monitoring mode, consider creating a virtual patch Log4Shell A 0-day exploit in the Java core library log4j was discovered that results in Remote Code Execution (RCE) by simple 1-line exploit with JNDI URL. Given how ubiquitous this library is, the impact…
We all know how it’s convenient to use tools like Sentry or Datadogs for JavaScript events monitoring. It allows to catch errors in real-time, organize and manage issues resolution process, and genuinely shift left operations to developers. But Wallarm security experts warn of dangerous patterns to use such tools integrated into UI since it can cause private data-stealing from authenticated users in an almost invisible way. This article will explain how it could happen and…
Security probably would not be too interesting to you at all if you were a liquor store, restaurant, or work in similar sectors of the economy. However, security should definitely be a front-row concept if you are a start-up in the technology space or a business that depends on technology for success. Generally, suppose you are running a B2B (Business to Business) organization or a B2C (Business to Consumer) where you have to interact with…
HTTP/2 become the standard defacto for the modern web and causes new application security risks. The HTTP2 request smuggling is one of a few HTTP/2 vulnerabilities with the high severity that raised last year. In this post, we will describe it in detail and suggest an open-source tool http2smugl that detects such kinds of vulnerabilities. HTTP/2 is the thing that already took an Internet. According to the Wikipedia: “The standardization effort was supported by Chrome,…
Welcome to the Wallarm weekly web exploits digest! Since this week, we will publish our weekly digests consists of web exploits with CVSS scores higher than 5. It will be followed by explanations, risks analysis, related stories and news. So, here we go!
The most sophisticated and interesting exploit was out of this score for some reason, but who we are to argue with CVSS score 😉 This is the Apache OFBiz XML-RPC Java Serialization Remote Code Execution issues https://vulners.com/packetstorm/PACKETSTORM:161769 where you can find a XML-packed and Base64 encoded Java deserialization payload:
<name>#{rand_text_alphanumeric(8..42)}</name>
<value>
<serializable xmlns="https://ws.apache.org/xmlrpc/namespaces/extensions">#{Rex::Text.encode_base64(data)}</serializable>
</value>
The recent critical security issue in VMware vCenter was discovered this January and fixed on February 23rd https://www.vmware.com/security/advisories/VMSA-2021-0002.html. The exploit looks like a simple JSP shell upload, but for some reason, it’s a blind spot for Web Application Firewalls (WAFs). Let’s understand why. The CVE-2021-21972 affects vCenter versions 6.5, 6.7, and 7.0. The exploit for Metasploit released https://vulners.com/packetstorm/PACKETSTORM:161695 today. The exploit description is pretty straight forward “This module exploits an unauthenticated OVA file upload and path traversal in VMware…