Multiple vulnerabilities in IBM Security Identity Manager Virtual Appliance

1) 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 Security Identity Manager Virtual Appliance: 7.0.1 - 7.0.2

External links

http://www.ibm.com/blogs/psirt/security-bulletin-ibm-security-identity-manager-virtual-appliance-is-vulnerable-to-arbitrary-code-execution-due-to-apache-log4j-and-other-issues-cve-2021-4104-cve-2021-45046-cve-2021-38951/
http://www.ibm.com/support/pages/node/6612331

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: #VU58976

Risk: High

CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2021-45046

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

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to incomplete patch in Apache Log4j 2.15.0 for a code injection vulnerability #VU58816 (CVE-2021-44228) in certain non-default configurations. A remote attacker with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) can pass malicious data using a JNDI Lookup pattern and perform a denial of service (DoS) attack, exfiltrate data or execute arbitrary code.

Later discovery demonstrates a remote code execution on macOS but no other tested environments.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Security Identity Manager Virtual Appliance: 7.0.1 - 7.0.2

External links

http://www.ibm.com/blogs/psirt/security-bulletin-ibm-security-identity-manager-virtual-appliance-is-vulnerable-to-arbitrary-code-execution-due-to-apache-log4j-and-other-issues-cve-2021-4104-cve-2021-45046-cve-2021-38951/
http://www.ibm.com/support/pages/node/6612331

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?

Yes. This vulnerability is being exploited in the wild.

3) Resource exhaustion

EUVDB-ID: #VU59281

Risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-38951

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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. A remote attacker can send a specially crafted request to the web server, consume all available CPU resources and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Security Identity Manager Virtual Appliance: 7.0.1 - 7.0.2

External links

http://www.ibm.com/blogs/psirt/security-bulletin-ibm-security-identity-manager-virtual-appliance-is-vulnerable-to-arbitrary-code-execution-due-to-apache-log4j-and-other-issues-cve-2021-4104-cve-2021-45046-cve-2021-38951/
http://www.ibm.com/support/pages/node/6612331

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.

4) Heap-based buffer overflow

EUVDB-ID: #VU58844

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-4101

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted HTML content in Swiftshader. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Security Identity Manager Virtual Appliance: 7.0.1 - 7.0.2

External links

http://www.ibm.com/blogs/psirt/security-bulletin-ibm-security-identity-manager-virtual-appliance-is-vulnerable-to-arbitrary-code-execution-due-to-apache-log4j-and-other-issues-cve-2021-4104-cve-2021-45046-cve-2021-38951/
http://www.ibm.com/support/pages/node/6612331

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.