IBM QRadar SIEM update for Apache Log4j

1) Deserialization of Untrusted Data

EUVDB-ID: #VU27960

Risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-17571

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 within the SocketServer class in Log4j. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system,  if these is a deserialization gadget listening to untrusted network traffic for log data.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Qradar SIEM: 7.4.3 - 7.5.0 Update Pack 3

External links

http://www.ibm.com/blogs/psirt/security-bulletin-due-to-use-of-apache-log4j-ibm-qradar-siem-is-vulnerable-to-arbitrary-code-execution-cve-2019-17571-cve-2021-44832-cve-2021-4104/
http://www.ibm.com/support/pages/node/6832160

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Code Injection

EUVDB-ID: #VU59098

Risk: Medium

CVSSv3.1: 5.8 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-44832

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

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation. A remote user with permission to modify the logging configuration file can construct a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI which can execute remote code.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Qradar SIEM: 7.4.3 - 7.5.0 Update Pack 3

External links

http://www.ibm.com/blogs/psirt/security-bulletin-due-to-use-of-apache-log4j-ibm-qradar-siem-is-vulnerable-to-arbitrary-code-execution-cve-2019-17571-cve-2021-44832-cve-2021-4104/
http://www.ibm.com/support/pages/node/6832160

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Deserialization of Untrusted Data

EUVDB-ID: #VU58977

Risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

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 Qradar SIEM: 7.4.3 - 7.5.0 Update Pack 3

External links

http://www.ibm.com/blogs/psirt/security-bulletin-due-to-use-of-apache-log4j-ibm-qradar-siem-is-vulnerable-to-arbitrary-code-execution-cve-2019-17571-cve-2021-44832-cve-2021-4104/
http://www.ibm.com/support/pages/node/6832160

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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