Privilege escalation in IBM DB2

1) Insecure DLL loading

EUVDB-ID: #VU15906

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1802

CWE-ID: CWE-427 - Uncontrolled Search Path Element

Exploit availability: No

Description

The vulnerability allows a local attacker to compromise vulnerable system.

The vulnerability exists due to insecure .dll loading mechanism when opening files. A local attacker can place a file along with specially crafted .dll file on a remote SBM or WebDAV share, trick the victim into opening it and execute arbitrary code on the target system with privileges of the current victim.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

The vulnerability has been fixed in the versions 9.7 FP11, 10.1 FP6, 10.5 FP10, 11.1.3.3 iFix002.

Vulnerable software versions

IBM DB2: 9.7 - 11.1.3.3 iFix002

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_db2:9.7.0.11:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_db2:10.1.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_db2:10.5.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_db2:11.1.3.3:iFix002:*:*:*:*:*:*

External links

https://www-01.ibm.com/support/docview.wss?uid=ibm10733122

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

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.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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