Cisco addressed two DoS vulnerabilities in CISCO ESA products that can be exploited by remote unauthenticated attacker. Cisco fixed two denial-of-service (DoS) flaws in Email Security Appliance (ESA) products that can be exploited by a remote unauthenticated attacker. The first flaw tracked as CVE-2018-15453 has been rated as “critical,” it is a memory corruption bug caused by improper input validation in emails signed with Secure/Multipurpose Internet Mail Extensions (S/MIME)....
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Input Validation 1. Conduct all data validation on a trusted system (e.g., The server) 2. Identify all data sources and classify them into trusted and untrusted. Validate all data from untrusted sources (e.g., Databases, file streams, etc.) 3. There should be a centralized input validation routine for the application 4. Specify proper character sets, such as UTF-8, for all sources of input 5. Encode data to a common character set before validating (Canonicalize) 6. All validation...
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During the past week, an outbreak of Ryuk ransomware that impeded newspaper printing services in the United States has garnered a lot of attention. To determine who was behind the attack many have cited past research that compares code from Ryuk with the older ransomware Hermes to link the attack to North Korea. Determining attribution was largely based on the fact that the Hermes ransomware...
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Security researchers have been warning about a simple technique that cybercriminals and email scammers are already being using in the wild to bypass security features of Microsoft Office 365, including Safe Links, which are originally designed to protect users from malware and phishing attacks. Safe Links has been included by Microsoft in Office 365 as part of its ATP (Advanced Threat Protection) solution that works...
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WordPress-related vulnerabilities have seen a 300% increase in 2018 compared to the previous year, a recent study has found. Most of the bugs were in the plugins that extend the functionality of WordPress websites. Powering about 30% of all websites on the internet, WordPress is the most popular content management system (CMS), followed by Joomla and Drupal trailing behind at a safe distance. A product’s...
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