Multiple vulnerabilities in IBM DB2 (Apache Log4j component)



| Updated: 2024-10-25
Risk Critical
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-4104
CVE-2021-44228
CWE-ID CWE-502
CWE-94
Exploitation vector Network
Public exploit Vulnerability #2 is being exploited in the wild.
Vulnerable software
 IBM DB2
Server applications / Database software

Vendor IBM Corporation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Deserialization of Untrusted Data

EUVDB-ID: #VU58977

Risk: Medium

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-4104

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data in JMSAppender, when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution.

Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM DB2: 10.5 - 11.5.7.0

CPE2.3 External links

https://www.ibm.com/blogs/psirt/security-bulletin-vulnerability-in-apache-log4j-affects-some-features-of-ibm-db2-cve-2021-4104-3/
https://www.ibm.com/support/pages/node/6528678


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Code Injection

EUVDB-ID: #VU58816

Risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2021-44228

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation when processing LDAP requests. A remote attacker can send a specially crafted request to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, we are aware of attackers exploiting the vulnerability in the wild.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM DB2: 10.5 - 11.5.7.0

CPE2.3
External links

https://www.ibm.com/blogs/psirt/security-bulletin-vulnerability-in-apache-log4j-affects-some-features-of-ibm-db2-cve-2021-4104-3/
https://www.ibm.com/support/pages/node/6528678


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.



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