Security experts are warning of a dangerous zero-day remote code vulnerability that affects the Oracle WebLogic service platform.
Oracle WebLogic wls9_async and wls-wsat components are affected by a deserialization remote command execution zero-day vulnerability.
This zero-day flaw affects all Weblogic versions, including the latest one, that have the wls9_async_response.war and wls-wsat.war components enabled.
Oracle WebLogic Server is a Java EE application server currently developed by Oracle Corporation, it is used by numerous applications and web enterprise portals based on Java technology. The flaw received the identifier CNVD-C-2019-48814.
An attacker could exploit the vulnerability to remotely execute commands without authorization by sending a specially crafted HTTP request.
According to the bulletin CNTA-2019-0015 issued by CNCERT/CC, the flaw affects the WebLogic 10.x and WebLogic 12.1.3 versions. The criticality flaw has not yet been addressed by Oracle.
Experts recomments to disable vulnerable modules “wls9_async_response.war” and “wls-wsat.war”, or to inhibit access to URLs “/ _async / * “and” / wls-wsat / * “within Oracle WebLogic installs.
Experts at KnownSec 404 Team searched for vulnerable instances online by using the ZoomEye search engine, they found 36,173 installs, most of them in the US and China.
Experts at F5 Labs revealed to have already spotted a campaign exploiting the zero-day flaw in Weblogic servers.
Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer.
Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US.
Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines.
Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.