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Vulnerability in Oracle Platform Security for Java (OPSS), a component of Oracle Fusion Middleware, affecting supported versions 11.1.1.9.0, 12.2.1.3.0, and 12.2.1.4.0. The issue is described as easily exploitable and allows an unauthenticated attacker with network access over HTTP to compromise OPSS, potentially resulting in full takeover of the OPSS component. CVSS v3.1 base score is 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides a proof-of-concept (PoC) exploit for CVE-2021-2302, targeting Oracle WebLogic Server 12.1.2.3, Oracle Business Intelligence 12.1.2.4, and Oracle Database 19c. The exploit leverages a Java deserialization vulnerability using a gadget chain involving javax.management.BadAttributeValueExpException and oracle.security.jps.az.internal.common.principals.UnresolvedPrincipal. The main Java file (src/PoC_CVE_2021_2302.java) constructs a malicious serialized object (PoC_CVE_2021_2302.ser) that, when deserialized on a vulnerable system, will execute an arbitrary command (in this PoC, 'calc.exe'). The repository consists of a README.md describing the gadget chain and affected products, and the Java PoC code. The attack vector is network-based, as the payload must be delivered to a service that deserializes untrusted Java objects. The exploit demonstrates code execution but does not include delivery or exploitation mechanisms beyond payload creation.
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