New Exploit Targeting Java Vulnerability Found in BlackHole Arsenal

CVE-2010-0188 is an unspecified code-injection (CWE-94) flaw in Adobe Reader and Acrobat that allows attackers to cause a denial of service or possibly execute arbitrary code on the victim's machine. It is triggered when an affected application processes a maliciously crafted PDF document, typically delivered as an email attachment or downloaded from a website, so simply viewing the file with vulnerable software is enough to expose the user. A successful attack gives the attacker code execution in the context of the logged-on user, which can be leveraged to install malware or ransomware. Anyone running Adobe Reader or Acrobat is affected; CISA lists the products without published version ranges, so all Adobe deployments should be treated as potentially in scope. Exploitation is confirmed in the wild: the flaw is in CISA KEV (added 2022-03-03) with known ransomware use, and EPSS assigns an 88.2% probability of exploitation within 30 days (100th percentile).

Do: Apply updates per vendor instructions: install the Adobe security update that fixes CVE-2010-0188 on any legacy Acrobat/Reader deployment and migrate unsupported installations to a currently supported Acrobat/Reader release. Given the known ransomware association, hunt for signs of compromise such as suspicious PDF attachments opened around malware activity, and block or sandbox PDFs at email and web gateways. Verify no critical hosts or automated workflows still depend on outdated Reader/Acrobat components for PDF processing.

CVE-2011-3544 is an access control flaw in the Rhino JavaScript Script Engine component used by Java applets in Oracle's Java Runtime Environment. It is triggered when a user's browser loads a malicious Java applet, allowing script executed through the Rhino engine to bypass Java's access restrictions. An attacker who successfully exploits it gains the ability to run arbitrary code on the victim's machine with the privileges of the logged-in user, typically via drive-by download from a compromised or attacker-controlled website. Any system with a vulnerable Oracle Java SE JDK or JRE and an enabled Java browser plugin is affected. Exploitation is confirmed in the wild: the flaw was added to CISA's KEV on 2022-03-03, carries a 96.7% EPSS probability of exploitation within 30 days, and contemporary reports show it weaponized in the BlackHole/Whitehole exploit kits and used in mass OS X exploitation.

Do: Apply updated Oracle Java SE builds per Oracle's vendor instructions, prioritizing internet-facing and end-user systems listed in the KEV guidance. Where patching is delayed, disable the Java browser plugin or block Java applets at the web gateway, since the attack vector is malicious applets served over the web. Review endpoints for signs of exploit-kit drive-by compromise, especially legacy Windows and OS X machines with outdated Java.