Remote code execution in IBM Cloud Object Storage Systems

1) Integer overflow

EUVDB-ID: #VU59643

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-46143

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in the doProlog() function in xmlparse.c. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Cloud Object Storage Systems: 3.16.3.36

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_cloud_object_storage_systems:3.16.3.36:*:*:*:*:*:*:*

External links

https://www.ibm.com/blogs/psirt/security-bulletin-xpat-vulnerability-affect-ibm-cloud-object-storage-systems-feb-2022-v1-a/
https://www.ibm.com/support/pages/node/6555324

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.