Oracle fixes critical RCE vulnerabilities in Weblogic Server

Oracle released its Critical Patch Update for July 2021, it fixes hundreds of flaws, including Critical Remotely Exploitable vulnerabilities in Weblogic Server.

Oracle this week released its quarterly Critical Patch Update for July 2021 that contains 342 new security patches for multiple product families. Some of the vulnerabilities addressed by the IT giant could be remotely exploited by attackers to take control of devices.

One of the most severe issues addressed by Oracle is a critical deserialization vulnerability via XMLDecoder in Oracle WebLogic Server Web Services. The CVE-2019-2729 flaw is a remote code execution vulnerability that could be exploited by an unauthenticated attacker.

“This Security Alert addresses CVE-2019-2729, a deserialization vulnerability via XMLDecoder in Oracle WebLogic Server Web Services. This remote code execution vulnerability is remotely exploitable without authentication, i.e., may be exploited over a network without the need for a username and password.” reads the advisory published by Oracle.

“Due to the severity of this vulnerability, Oracle strongly recommends that customers apply the updates provided by this Security Alert as soon as possible.”

The vulnerability received a CVSS score of 9.8 out of 10, it resides in the Oracle Hyperion Infrastructure Technology and affects WebLogic Server versions 11.1.2.4 and 11.2.5.0.

The company also addressed other vulnerabilities in WebLogic Server, three of which rated as critical severity:

CVE-2021-2394 (CVSS score: 9.8)
CVE-2021-2397 (CVSS score: 9.8)
CVE-2021-2382 (CVSS score: 9.8)
CVE-2021-2378 (CVSS score: 7.5)
CVE-2021-2376 (CVSS score: 7.5)
CVE-2021-2403 (CVSS score: 5.3)

Oracle urges customers to install security updates immediately.

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Pierluigi Paganini

(SecurityAffairs – hacking, Weblogic)

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Pierluigi Paganini

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”.