Apache Log4j Deserialization Remote Code Execution (CVE-2019-17571) Vulnerability Threat Alert
janeiro 6, 2020
Vulnerability Description
On December 19 local time, Apache Software Foundation (ASF) officially released a security advisory, announcing that Apache Log4j has a deserialization issue that could cause remote code execution (CVE-2019-17571). Log4j is a Java-based open-source logging tool from the Apache Software Foundation. Log4j 1.2 includes a SocketServer class which can easily accept serialized log events and deserialize them without authentication. With the aid of deserialization tools, an attacker could use this class to remotely execute arbitrary code. (mais…)
Apache Flink Arbitrary Jar Package Upload Threat Alert
dezembro 10, 2019
Overview
Recently, researchers have discovered the Apache Flink Jar package to upload the attack data. Attackers can exploit this vulnerability to upload a Jar package containing malicious code without authorization, thereby taking control of the target server. (mais…)
Advisory: Apache Flink Remote Code Execution Vulnerability
dezembro 2, 2019
Overview
Recently, a security researcher announced a remote code execution vulnerability in Apache Flink Dashboard. The vulnerability does not require an attacker to authenticate, and a malicious Jar package can be uploaded via the dashboard to execute the code remotely. NSFOCUS researchers also made a successful re-enactment through research, confirming that they can attack the latest version of Flink. (mais…)
Advisory: Apache Shiro RememberMe Padding Oracle Vulnerability
novembro 30, 2019
Vulnerability Description
In September 2019, Apache officially released a vulnerability topic “RememberMe Padding Oracle Vulnerability” numbered SHIRO-721. The issue pointed out that because the RememberMe field of the Apache Shiro cookie is encrypted by the AES-128-CBC mode, Shiro is vulnerable to Padding Oracle attacks. An attacker can use the Legal RememberMe cookie as the Padding Oracle attack prefix to construct RememberMe to trigger a Java deserialization attack. The attacker does not need to know the RememberMe encryption key when executing an attack. Apache Shiro is a powerful and easy-to-use Java security framework for performing authentication, authorization, passwords, and session management. Recently, it has been found that the use of this vulnerability has been spread in a small scope, and relevant users should take measures to protect against this vulnerability as soon as possible. (mais…)
Apache Solr velocity Remote Code Execution Vulnerability Handling Guide
novembro 12, 2019
Vulnerability Description
On October 30, @_S00pY disclosed the exploitation of Apache Solr Remote Code Execution Vulnerability, which allows attackers to implement remote code execution via velocity templates. After testing, the vulnerability can be successfully triggered, and no official security patch has been released. (mais…)
Apache Tomcat DoS Vulnerability (CVE-2019-0199) Threat Alert
março 28, 2019
1 Vulnerability Overview
Recently, The Apache Software Foundation announced the existence of a denial-of-service (DoS) vulnerability in Apache Tomcat HTTP/2. Specifically, the HTTP/2 implementation accepts streams with excessive numbers of SETTINGS frames and also permits clients to keep streams open without reading/writing request/response data. Thus, too many connection requests from clients can cause server-side thread exhaustion. Successful exploitation of this vulnerability would result in a denial of service on the target. (mais…)
