SB2021012210 - Multiple vulnerabilities in Oracle FLEXCUBE Universal Banking

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Insufficient verification of data authenticity (CVE-ID: CVE-2019-11269)

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to the application relies on the URL passed via the "redirect_uri" parameter. A remote attacker can create a specially crafted link that once clicked will cause the authorization server to redirect the resource owner user-agent to a URI under the control of the attacker after successful authentication. As a result the attacker can gain authorization code and bypass OAuth authentication.

2) Information disclosure (CVE-ID: CVE-2019-12399)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output within the Apache Kafka Connect REST API tasks endpoint. A remote authenticated user can issue a request to the same Connect cluster to obtain the connector's task configurations and the response will contain the plaintext secret.

3) Resource exhaustion (CVE-ID: CVE-2020-11612)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources within ZlibDecoders in Netty while decoding a ZlibEncoded byte stream. A remote attacker can trigger resource exhaustion by passing an overly large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.

Remediation

Install update from vendor's website.

References

• https://www.oracle.com/security-alerts/cpujan2021.html?3368