Missing authentication for critical function in IBM InfoSphere Information Server

1) Missing Authentication for Critical Function

EUVDB-ID: #VU76481

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-34538

CWE-ID: CWE-306 - Missing Authentication for Critical Function

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to CREATE() and DROP() function operations does not check for necessary authorization of involved entities in the query. A remote unauthenticated attacker can manipulate an existing UDF to drop and recreate UDFs pointing them to new jars that could be potentially malicious.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM InfoSphere Information Server: before 11.7.1.4 Service pack 1

External links

http://www.ibm.com/support/pages/node/6988651

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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