CVE-2023-30445: 
IBM Db2 vulnerability analysis and mitigation

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) versions 10.5, 11.1, and 11.5 is vulnerable to denial of service through specially crafted queries on certain tables. The vulnerability was assigned CVE-2023-30445 and IBM X-Force ID 253357. This high-severity vulnerability was disclosed in July 2023 and affects multiple versions of IBM Db2 database software across various operating systems including Linux, UNIX, and Windows platforms (IBM Advisory, NetApp Advisory).

The vulnerability has been assigned a CVSS v3.1 Base Score of 7.5 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. This indicates that the vulnerability can be exploited remotely with low attack complexity, requires no privileges or user interaction, and can result in high impact to system availability. The vulnerability is classified under CWE-20 (Improper Input Validation) according to IBM's assessment (NetApp Advisory).

When successfully exploited, this vulnerability can lead to a denial of service condition in affected IBM Db2 database systems. The attack specifically impacts system availability while not affecting confidentiality or integrity of the data (IBM Advisory).

IBM has released special builds containing interim fixes for affected versions. These builds are available for V10.5 FP11, V11.1.4 FP7, V11.5.7, and V11.5.8, and can be applied to any affected fixpack level of the appropriate release. No workarounds are available for this vulnerability, making patch installation the only mitigation option (IBM Advisory).