Security readout for executives and security teams
Plain-English summary
Affected IBM Db2 systems can be made unavailable by a specially crafted query against certain tables. The business risk is service outage for applications depending on Db2, not confirmed data theft or data alteration. Treat this as urgent where Db2 backs critical services or is reachable from untrusted networks.
Executive priority
Prioritize remediation for production Db2 systems supporting customer-facing, revenue, identity, or operational workloads. This CVE can cause outages without requiring privileges, so availability exposure matters more than data-loss concerns based on the supplied evidence.
Technical view
CVE-2023-30445 affects IBM Db2 for Linux, UNIX and Windows, including Db2 Connect Server, versions 10.5, 11.1, and 11.5. It is a CWE-20 input validation issue with CVSS 3.1 score 7.5: network exploitable, low complexity, no privileges, no user interaction, and high availability impact.
Likely exposure
Exposure is most likely in environments running IBM Db2 LUW or Db2 Connect Server 10.5, 11.1, or 11.5. Risk increases when Db2 services are reachable from broad internal networks, partners, or the internet. The sources do not identify unaffected fix levels.
Exploitation context
The CVE is not listed as CISA KEV in the supplied bundle, and no cited source states active exploitation. CVSS indicates remote unauthenticated reachability, but the described impact is denial of service through a crafted query on certain tables, not confidentiality or integrity compromise.
Researcher notes
The public bundle describes affected versions and impact but does not include root-cause internals, exact vulnerable table conditions, fixed builds, or exploit evidence. Validate exposure through asset inventory and vendor advisory comparison rather than attempting exploit reproduction.
Mitigation direction
- Review IBM advisory 7010557 and apply IBM-supported fixes or configuration guidance.
- Inventory Db2 LUW and Db2 Connect Server versions 10.5, 11.1, and 11.5.
- Limit Db2 network access to trusted application hosts where feasible.
- Review NetApp advisory if Db2 is embedded in or supports NetApp-managed environments.
- Monitor Db2 availability and error patterns for unexplained query-triggered outages.
Validation and detection
- Confirm installed Db2 major versions and fix pack levels against IBM advisory guidance.
- Identify Db2 listeners reachable from untrusted or overly broad network segments.
- Map business services dependent on affected Db2 instances.
- Check change records for IBM-recommended updates or compensating controls.
- Review incident logs for unexplained Db2 crashes or availability interruptions.
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-2023-30445 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/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:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/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/253357CVE 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.