Security readout for executives and security teams
Plain-English summary
CVE-2023-30447 can let an unauthenticated network attacker disrupt IBM Db2 service availability by submitting a specially crafted query against certain tables. The sources describe denial of service only, not data theft or modification.
Executive priority
Treat this as a moderate availability risk for business systems relying on affected Db2 databases. Prioritize exposed or business-critical deployments, especially where downtime would affect revenue, operations, or customer services.
Technical view
IBM Db2 for Linux, UNIX and Windows, including Db2 Connect Server, versions 10.5, 11.1, and 11.5 are affected. The issue is classified as CWE-20 input validation with CVSS 3.1 score 5.9, network attack vector, high complexity, no privileges, no user interaction, and high availability impact.
Likely exposure
Exposure is most relevant where affected Db2 services are reachable by applications, users, partners, or network paths that can submit SQL queries. The source bundle does not define the specific table conditions required.
Exploitation context
CISA KEV is false in the supplied bundle, and no cited source states active exploitation. Attack complexity is high, but no authentication or user interaction is required according to the CVSS vector.
Researcher notes
The supplied evidence does not name affected table types, exploit details, or specific fixed builds. Avoid assuming exploitability in all Db2 deployments; validate version, network reachability, query paths, and vendor remediation status.
Mitigation direction
- Check IBM advisory guidance for fixed versions or maintenance levels.
- Inventory Db2 LUW and Db2 Connect Server versions 10.5, 11.1, and 11.5.
- Limit Db2 network reachability to trusted application paths and administrators.
- Review application query access where untrusted users can influence SQL behavior.
- Monitor Db2 availability errors and unusual resource exhaustion patterns.
Validation and detection
- Confirm installed Db2 edition and version on every database host.
- Compare versions against IBM advisory CVE-2023-30447 guidance.
- Identify internet, partner, VPN, and internal paths to Db2 listeners.
- Review whether applications allow untrusted users to trigger arbitrary or dynamic queries.
- Check IBM X-Force ID 253436 and NetApp advisory for relevant environment notes.
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-2023-30447 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/253436CVE 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.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.