Multiple vulnerabilities in IBM MQ
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-4218 CVE-2023-44487 |
| CWE-ID | CWE-611 CWE-400 |
| Exploitation vector | Network |
| Public exploit | Vulnerability #2 is being exploited in the wild. |
| Vulnerable software |
IBM MQ Server applications / Other server solutions |
| Vendor | IBM Corporation |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) XML External Entity injection
EUVDB-ID: #VU86800
Risk: Low
CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-4218
CWE-ID:
CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to some files with xml content are parsed vulnerable against all sorts of XXE attacks. A local user can trick the victim into opening a specially crafted XML code and view contents of arbitrary files on the system or initiate requests to external systems.
MitigationInstall update from vendor's website.
Vulnerable software versionsIBM MQ: before 9.0.0.23, 9.1.0.20, 9.2.0.22, 9.3.5, 9.0.0.23, 9.0.0.23, 9.0.0.23
CPE2.3 External linkshttps://www.ibm.com/support/pages/node/7123137
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.
2) Resource exhaustion
EUVDB-ID: #VU81728
Risk: High
CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A/U:Amber]
CVE-ID: CVE-2023-44487
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improperly control of consumption for internal resources when handling HTTP/2 requests with compressed HEADERS frames. A remote attacker can send a sequence of compressed HEADERS frames followed by RST_STREAM frames and perform a denial of service (DoS) attack, a.k.a. "Rapid Reset".
Note, the vulnerability is being actively exploited in the wild.
Install update from vendor's website.
Vulnerable software versionsIBM MQ: before 9.0.0.23, 9.1.0.20, 9.2.0.22, 9.3.5, 9.0.0.23, 9.0.0.23, 9.0.0.23
CPE2.3https://www.ibm.com/support/pages/node/7123137
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.
