A critical vulnerability has been discovered in Oracle GoldenGate (component: OGG Core Library) that can lead to a potential takeover of the system. Designated as CVE-2022-21442, this vulnerability affects the supported version prior to 23.1. The flaw allows low privileged attackers with access to the infrastructure where Oracle GoldenGate is running to compromise the system.

According to the Common Vulnerability Scoring System (CVSS) v3.1, the vulnerability has a Base Score of 8.8, and its CVSS Vector is (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H), which signifies confidentiality, integrity, and availability impacts. While the vulnerability is present within Oracle GoldenGate, it can also significantly affect additional products (scope change).

In this long read, we will dive into more details about this vulnerability, including the code snippet, original references, and exploit details.

Code snippet

As of now, there is no publicly available exploit code for CVE-2022-21442. However, here's a generic example of how an attacker might attempt to exploit a similar vulnerability in a system:

# Vulnerable code example
function execute_command() {
    command = "OracleGoldenGateCommand " + user_input
    system(command);
}

# Attacker's input
user_input = "; rm -rf /"
execute_command()

In this example, the attacker is injecting a malicious payload (; rm -rf /) as the user input, making the system execute an unintended and destructive command.

1. Oracle Security Advisory: https://www.oracle.com/security-alerts/cpuoct2022.html
2. CVE-2022-21442: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21442
3. National Vulnerability Database (NVD): https://nvd.nist.gov/vuln/detail/CVE-2022-21442

Exploit details

At the time of writing, there are no known public exploits for CVE-2022-21442. However, it's crucial to understand the potential risk associated with this vulnerability. An attacker with low privileges, who can log in to the infrastructure where Oracle GoldenGate is running, can exploit this vulnerability to gain unauthorized access and potentially take over the Oracle GoldenGate system.

Mitigation steps

Users are advised to follow the recommendations provided by Oracle in their Security Advisory (linked above) to mitigate and protect their systems from this vulnerability:

Apply the Oracle GoldenGate patch as soon as possible by updating to version 23.1 or later.

2. Restrict access to the infrastructure where Oracle GoldenGate is running, allowing only authorized users and necessary privileges.
3. Implement network segmentation and segregate critical systems from non-critical networks to limit the attack surface.

Stay informed by following updates and guidelines from Oracle regarding this vulnerability.

In conclusion, CVE-2022-21442 is a critical vulnerability that can lead to a compromise of the Oracle GoldenGate system. It's vital to take the necessary steps to mitigate this vulnerability and protect your infrastructure from potential attacks. Patch your Oracle GoldenGate implementation, restrict access, and regularly monitor your systems for any unusual activities.

Timeline

Published on: 04/19/2022 21:15:00 UTC
Last modified on: 04/28/2022 13:28:00 UTC