Multiple vulnerabilities in IBM MQ Appliance

Published: 2024-06-27 | Updated: 2024-12-19

Risk	High
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2020-12762 CVE-2021-33631 CVE-2023-6931 CVE-2024-1086
CWE-ID	CWE-787 CWE-190 CWE-416
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available. Vulnerability #4 is being exploited in the wild.
Vulnerable software	IBM MQ Appliance Other software / Other software solutions
Vendor	IBM Corporation

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU27882

Risk: High

CVSSv4.0: 7.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2020-12762

CWE-ID: CWE-787 - Out-of-bounds write

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 input in the "printbuf_memappend". A remote attacker can create a specially crafted JSON file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MQ Appliance: before 9.3.0.20

CPE2.3

cpe:2.3:a:ibm_corporation:ibm_mq_appliance:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7157537

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. However, proof of concept for this vulnerability is available.

2) Integer overflow

EUVDB-ID: #VU86575

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-33631

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer overflow when mounting a malicious filesystem. A local user can mount a specially crafted filesystem, trigger an integer overflow and execute arbitrary code.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MQ Appliance: before 9.3.0.20

CPE2.3

cpe:2.3:a:ibm_corporation:ibm_mq_appliance:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7157537

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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

3) Out-of-bounds write

EUVDB-ID: #VU85021

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-6931

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the Linux kernel's Performance Events system component. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MQ Appliance: before 9.3.0.20

CPE2.3

cpe:2.3:a:ibm_corporation:ibm_mq_appliance:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7157537

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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

4) Use-after-free

EUVDB-ID: #VU86577

Risk: High

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2024-1086

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the netfilter nf_tables component in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MQ Appliance: before 9.3.0.20

CPE2.3

cpe:2.3:a:ibm_corporation:ibm_mq_appliance:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7157537

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.