Security readout for executives and security teams
Plain-English summary
This vulnerability can let an attacker crash or disrupt IBM Db2 service availability by sending a specially crafted query against certain tables. The main business risk is outage, not data theft or tampering. It is rated medium because exploitation is network reachable but assessed as high complexity.
Executive priority
Treat as a moderate availability risk. Prioritize systems supporting critical business processes, internet-exposed services, and shared enterprise databases. This is not presented as a data breach issue in the sources, but service disruption could still affect operations.
Technical view
CVE-2023-30448 affects IBM DB2 for Linux, UNIX and Windows, including Db2 Connect Server, versions 10.5, 11.1, and 11.5. The issue is improper input validation, CWE-20, leading to denial of service via a specially crafted query on certain tables. CVSS 3.1 is 5.9: network, high complexity, no privileges, no user interaction, availability impact high.
Likely exposure
Exposure is most likely where IBM Db2 LUW or Db2 Connect Server 10.5, 11.1, or 11.5 is reachable by untrusted or broad internal clients. The provided sources do not identify other affected products beyond the NetApp advisory reference.
Exploitation context
The CVE is not listed as CISA KEV in the provided bundle, and no cited source states active exploitation. The described attack requires a specially crafted query against certain tables, but the public bundle does not provide enough detail to judge practical exploitability beyond high attack complexity.
Researcher notes
The key uncertainty is exploit practicality. The CVSS vector allows unauthenticated network attack but marks complexity high, and the description narrows impact to specially crafted queries on certain tables. Avoid assuming active exploitation or broader product impact without additional vendor evidence.
Mitigation direction
- Identify all IBM Db2 LUW and Db2 Connect Server 10.5, 11.1, and 11.5 deployments.
- Review IBM advisory 7010557 for applicable fixes, fix packs, or supported upgrade guidance.
- Review IBM X-Force 253437 for vendor severity and remediation context.
- Check NetApp advisory NTAP-20230731-0007 if NetApp products depend on embedded or bundled Db2.
- Limit Db2 service reachability to required trusted application networks where feasible.
- Prioritize remediation for internet-facing or broadly reachable database services.
Validation and detection
- Confirm installed Db2 product, edition, and version on each database host.
- Map which applications and users can submit queries to affected Db2 services.
- Verify whether IBM advisory remediation has been applied on each affected instance.
- Check monitoring for unexplained Db2 crashes, restarts, or availability degradation.
- Document non-affected versions and vendor support evidence for audit records.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-30448 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H2.23.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/7010557CVE reference · vendor-advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/253437CVE reference · vdb-entry
- https://security.netapp.com/advisory/ntap-20230731-0007/CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.