Advisory Details

April 22nd, 2021

Oracle WebLogic Server T3 Protocol Deserialization of Untrusted Data Information Disclosure Vulnerability

CVE ID	CVE-2021-2211
CVSS SCORE	4.9, AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
AFFECTED VENDORS	Oracle
AFFECTED PRODUCTS	WebLogic Server
VULNERABILITY DETAILS	This vulnerability allows remote attackers to disclose sensitive information on affected installations of Oracle WebLogic Server. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of the T3 protocol. Crafted data in a T3 protocol message can trigger the deserialization of untrusted data. An attacker can leverage this vulnerability to disclose information in the context of the service account.
ADDITIONAL DETAILS	Oracle has issued an update to correct this vulnerability. More details can be found at: https://www.oracle.com/security-alerts/cpuapr2021.html
DISCLOSURE TIMELINE	2020-12-04 - Vulnerability reported to vendor 2021-04-22 - Coordinated public release of advisory
CREDIT	Quynh Le of VNPT ISC

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