Denial of service in IBM DB2

1) Input validation error

EUVDB-ID: #VU67214

Risk: Medium

CVSSv4.0: 4.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-35637

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 within the db2expln tools. A remote attacker can pass specially crafted SQL query to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

IBM DB2: 10.5 - 11.5.7.0

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_db2:10.5.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_db2:11.1.4.6:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_db2:11.5.7.0:*:*:*:*:*:*:*

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-db2-is-vulnerable-to-a-denial-of-service-after-entering-a-specially-crafted-malformed-sql-statement-into-the-db2expln-tool-cve-2022-35637/
https://www.ibm.com/support/pages/node/6618775

Q & A

Can this vulnerability be exploited remotely?

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