Multiple vulnerabilities in IBM App Connect Enterprise



Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-41039
CVE-2021-34432
CVE-2021-34431
CWE-ID CWE-20
CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
 IBM App Connect Enterprise
Universal components / Libraries / Software for developers

Vendor IBM Corporation

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU58484

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-41039

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted CONNECT packets containing lots of "user properties" and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM App Connect Enterprise: 10.0.0.0 - 12.0.8.0

CPE2.3 External links

https://www.ibm.com/support/pages/node/6986627


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) Input validation error

EUVDB-ID: #VU56021

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-34432

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote user can send a PUBLISH packet with topic length = 0 and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM App Connect Enterprise: 10.0.0.0 - 12.0.8.0

CPE2.3 External links

https://www.ibm.com/support/pages/node/6986627


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

3) Memory leak

EUVDB-ID: #VU55435

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-34431

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in the broker. A remote authenticated attacker can send a specially crafted CONNECT message and perform denial of service attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM App Connect Enterprise: 10.0.0.0 - 12.0.8.0

CPE2.3 External links

https://www.ibm.com/support/pages/node/6986627


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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



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