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A proof-of-concept (PoC) code demonstrating a newly disclosed digital signature bypass vulnerability in Java has been shared online. The high-severity flaw in question, CVE-2022-21449 (CVSS score: 7.5), impacts the following versions of Java SE and Oracle GraalVM Enterprise Edition – Oracle Java SE: 7u331, 8u321, 11.0.14, 17.0.2, 18 Oracle GraalVM Enterprise Edition: 20.3.5, 21.3.1, 22.0.0.2 […]
Cybersecurity researchers have disclosed a new version of the SolarMarker malware that packs in new improvements with the goal of updating its defense evasion abilities and staying under the radar. “The recent version demonstrated an evolution from Windows Portable Executables (EXE files) to working with Windows installer package files (MSI files),” Palo Alto Networks Unit […]
A Chinese advanced persistent threat tracked as Deep Panda has been observed exploiting the Log4Shell vulnerability in VMware Horizon servers to deploy a backdoor and a novel rootkit on infected machines with the goal of stealing sensitive data. “The nature of targeting was opportunistic insofar that multiple infections in several countries and various sectors occurred […]
Cybersecurity researchers have disclosed details of an evasive malware campaign that makes use of valid code signing certificates to sneak past security defenses and stay under the radar with the goal of deploying Cobalt Strike and BitRAT payloads on compromised systems. The binary, a loader, has been dubbed “Blister” by researchers from Elastic Security, with […]
Cybersecurity researchers have disclosed a novel technique adopted by a threat actor to deliberately evade detection with the help of malformed digital signatures of its malware payloads. “Attackers created malformed code signatures that are treated as valid by Windows but are not able to be decoded or checked by OpenSSL code — which is used […]
Security researchers have disclosed an unpatched weakness in Microsoft Windows Platform Binary Table (WPBT) affecting all Windows-based devices since Windows 8 that could be potentially exploited to install a rootkit and compromise the integrity of devices. “These flaws make every Windows system vulnerable to easily-crafted attacks that install fraudulent vendor-specific tables,” researchers from Eclypsium said […]
The maintainers of OpenSSL have released a fix for two high-severity security flaws in its software that could be exploited to carry out denial-of-service (DoS) attacks and bypass certificate verification. Tracked as CVE-2021-3449 and CVE-2021-3450, both the vulnerabilities have been resolved in an update (version OpenSSL 1.1.1k) released on Thursday. While CVE-2021-3449 affects all OpenSSL […]
Cyber Security researchers at Guardicore Labs today published a detailed report on a widespread cryptojacking campaign attacking Windows MS-SQL and PHPMyAdmin servers worldwide. Dubbed Nansh0u, the malicious campaign is reportedly being carried out by an APT-style Chinese hacking group who has already infected nearly 50,000 servers and are installing a sophisticated kernel-mode rootkit on compromised […]
Mozilla has released an out-of-cycle update for their regular channel Firefox 66 (66.0.4) and Extended Support channel Firefox 60 (60.06.2). This is to address an issue regarding all supported Firefox add-ons rendered disabled as the expired certificate that authenticates them to the browser expired. With the emergency update, Mozilla fixed the broken certificate chain that […]
Security researchers from Fidelis identified a new method to establish a covert channel communication by abusing widely implemented X.509 public key certificates. Certificates remain as a critical component of secure connection to a website. When a browser establishes a secure connection to a site, it checks that the server has the private key for the […]
New technique makes malware detection almost impossible. A team of security researchers from Deep Instinct have discovered a method of injecting malware inside a digitally-signed binary without affecting the overall file hash, which almost certainly ensures that antivirus and security software won’t detect the malicious file. When users double-click an executable and launch it into execution, […]