CVE-2020-4888 : Security Advisory and Response
Learn about CVE-2020-4888 affecting IBM QRadar SIEM versions 7.4.0 to 7.4.2 Patch 1 and 7.3.0 to 7.3.3 Patch 7, allowing remote attackers to execute arbitrary commands. Find mitigation steps and long-term security practices.
IBM QRadar SIEM 7.4.0 to 7.4.2 Patch 1 and 7.3.0 to 7.3.3 Patch 7 could allow a remote attacker to execute arbitrary commands on the system due to insecure deserialization of user-supplied content.
Understanding CVE-2020-4888
This CVE involves a vulnerability in IBM QRadar SIEM versions that could be exploited by a remote attacker to execute arbitrary commands.
What is CVE-2020-4888?
The vulnerability in IBM QRadar SIEM versions 7.4.0 to 7.4.2 Patch 1 and 7.3.0 to 7.3.3 Patch 7 allows attackers to execute arbitrary commands through insecure deserialization of user-supplied content.
The Impact of CVE-2020-4888
- CVSS Base Score: 6.3 (Medium Severity)
- Attack Vector: Network
- Attack Complexity: Low
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: Low
- Privileges Required: Low
- User Interaction: None
- Exploit Code Maturity: Unproven
- Remediation Level: Official Fix
- Report Confidence: Confirmed
- Vector String: CVSS:3.0/I:L/AC:L/C:L/S:U/UI:N/A:L/AV:N/PR:L/E:U/RL:O/RC:C
- IBM X-Force ID: 190912
- The vulnerability could allow remote attackers to execute arbitrary commands on the system.
Technical Details of CVE-2020-4888
Vulnerability Description
The vulnerability is caused by insecure deserialization of user-supplied content by the Java deserialization function.
Affected Systems and Versions
- Affected Versions: 7.4.0 to 7.4.2 Patch 1 and 7.3.0 to 7.3.3 Patch 7 of IBM QRadar SIEM
Exploitation Mechanism
By sending a malicious serialized Java object, an attacker could exploit this vulnerability to execute arbitrary commands on the system.
Mitigation and Prevention
Immediate Steps to Take
- Apply official fixes provided by IBM for the affected versions.
- Monitor network traffic for any suspicious activity.
- Restrict access to vulnerable systems.
Long-Term Security Practices
- Regularly update and patch software to prevent vulnerabilities.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Stay informed about security bulletins and updates from IBM.