Improper Handling of Exceptional Conditions in IBM UrbanCode Release

1) Improper Handling of Exceptional Conditions

EUVDB-ID: #VU55422

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-2021-30639

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

Exploit availability: No

Description

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

The vulnerability exists due to improper error management within the application when handling unexpected connection termination. A remote attacker can drop connection with the Apache Tomcat server, which triggers a non-blocking I/O error and causes all requests, handled by that request object, to fail. As a result, a remote attacker can initiate and drop connections to the server and perform a denial of service attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM UrbanCode Release: 6.2.5.3 - 6.2.5.4

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_urbancode_release:6.2.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_urbancode_release:6.2.5.4:*:*:*:*:*:*:*

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-urbancode-release-is-affected-by-cve-2021-30639/
https://www.ibm.com/support/pages/node/6550778

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.