CVE-2020-2884

published 2020-04-15

CVE-2020-2884: Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 10.3.6.0.0…

Priority P2 62 critical 9.8 CVSS 3.1

AV N AC L PR N UI N S U C H I H A H

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Affected

8 ranges

Vendor	Product	Version range	Fixed in
oracle	weblogic_server	—	—
oracle	weblogic_server	—	—
oracle	weblogic_server	—	—
oracle	weblogic_server	—	—
oracle_corporation	weblogic_server	—	—
oracle_corporation	weblogic_server	—	—
oracle_corporation	weblogic_server	—	—
oracle_corporation	weblogic_server	—	—

Detection & IOCs extracted from sources · hover to see the quote

• → CVE-2020-2884 is exploitable over IIOP and T3 protocols — monitor/block T3 and IIOP traffic to Oracle WebLogic Server ports (default T3: 7001, IIOP: 7001/7002) from untrusted networks ↗
• → No authentication is required for exploitation — any unauthenticated inbound IIOP or T3 connection to WebLogic should be treated as suspicious and alerted on ↗
• → Affected Oracle WebLogic Server versions are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, and 12.2.1.4.0 — use version fingerprinting to identify unpatched instances exposed to the network ↗

• · The vulnerability resides in the Core component of Oracle WebLogic Server; exploitation requires network-level access to the T3 or IIOP listener — restricting or disabling these protocols at the firewall/network layer is the primary mitigation until patching ↗
• · Both IIOP and T3 are listed as attack vectors; organizations that have not explicitly disabled T3/IIOP on their WebLogic instances remain exposed even if behind a corporate firewall ↗

CVSS provenance

nvd v3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v3.0 9.8 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 7.5 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P

vendor_oracle 9.8 CRITICAL

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