#VU16209 Information disclosure in IBM DB2 - CVE-2018-1857

Vulnerability identifier: #VU16209

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1857

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
IBM DB2
Server applications / Database software

Vendor: IBM Corporation

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists due to Db2's Row and Column Access Control (RCAC) rules are not being enforced when creating a table using AS (CTAS) sub-select statements. A local attacker can create a table using AS (CTAS) sub-select statements to bypass Row and Column Access Control (RCAC) rules when using the 'WITH DATA' clause to select and insert data, allowing a user to bypass FGAC access controls and gain access important data.

Mitigation
Update to version 11.1.4.4.

Vulnerable software versions

IBM DB2: 11.1 FP1 - 11.1.3.3 iFix002

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External links
https://www-01.ibm.com/support/docview.wss?uid=ibm10734059

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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