Security readout for executives and security teams
Plain-English summary
CVE-2023-30431 is a high-severity IBM Db2 issue in the db2set component. A local attacker could trigger a buffer overflow and potentially run arbitrary code. The business risk is highest on servers where untrusted users, shared administrators, automation accounts, or compromised local accounts can access Db2 tooling.
Executive priority
Treat this as a high-priority infrastructure patching item, especially for database servers with multiple local users or administrative access paths. It is not described as remotely exploitable in the provided sources, but compromise could materially affect sensitive business data.
Technical view
IBM reports improper bounds checking in db2set for Db2 for Linux, UNIX and Windows, including Db2 Connect Server, versions 10.5, 11.1, and 11.5. The CVSS 3.1 score is 8.4 with local attack vector, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to systems running affected IBM Db2 LUW or Db2 Connect Server versions. Because the attack vector is local, internet exposure is not the primary indicator; focus on servers with shell access, shared hosting, jump-host access, or automation paths that can reach Db2 utilities.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The issue is still serious because successful exploitation could allow arbitrary code execution locally with high impact to data confidentiality, integrity, and availability.
Researcher notes
The key constraint is AV:L: validation should focus on local access paths and installed Db2 versions, not only perimeter scans. The source bundle does not provide exploit details, fixed build numbers, or workaround specifics, so remediation should be tied directly to IBM advisory guidance.
Mitigation direction
- Review IBM advisory node 7010565 for official fixes and supported remediation paths.
- Prioritize patching Db2 LUW and Db2 Connect Server 10.5, 11.1, and 11.5 systems.
- Restrict local access to Db2 servers and remove unnecessary user accounts.
- Check NetApp advisory guidance if Db2 is present in NetApp-supported environments.
- Monitor IBM X-Force entry 252184 for updated vendor details.
Validation and detection
- Inventory Db2 LUW and Db2 Connect Server installations across Linux, UNIX, and Windows.
- Confirm installed Db2 versions against 10.5, 11.1, and 11.5 exposure criteria.
- Verify whether the db2set utility exists on each identified host.
- Review local account access, automation accounts, and administrative shell access on Db2 servers.
- Confirm remediation status using vendor-supported version or fix evidence.
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-119: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-30431 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
- 8.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.55.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.4HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/7010565CVE reference · vendor-advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/252184CVE 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 Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.