Security readout for executives and security teams
Plain-English summary
CVE-2018-16856 is an information exposure issue in default Red Hat OpenStack Platform Director installations using openstack-octavia. Logs were readable by all local users and could contain sensitive data, including private keys. The main business risk is credential exposure inside an OpenStack environment, not remote system takeover.
Executive priority
Treat as a moderate confidentiality issue. Prioritize remediation in shared OpenStack environments, especially where many users have shell access or where exposed private keys could affect tenant or infrastructure trust boundaries.
Technical view
Openstack-octavia before openstack-octavia 2.0.2-5 and openstack-octavia-3.0.1-0.20181009115732 could create world-readable log files in default RHOSP Director deployments. The flaw maps to CWE-532 and has CVSS 3.0 score 5.5: local access, low complexity, low privileges, no user interaction, high confidentiality impact.
Likely exposure
Exposure is most likely where Red Hat OpenStack Platform Director deployed Octavia with affected package versions and local users can access host log files. Internet-facing exposure is not indicated by the supplied sources.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not listed as KEV. Abuse would require local low-privileged access and readable Octavia logs containing sensitive material.
Researcher notes
Evidence supports local information disclosure through overly permissive log files. The supplied bundle does not include exploit code, exploitation reports, or detailed vendor remediation beyond fixed package versions. Avoid expanding scope beyond RHOSP Director Octavia deployments without additional vendor evidence.
Mitigation direction
- Upgrade openstack-octavia to the fixed Red Hat package versions or later.
- Review Red Hat Bugzilla and vendor advisories for environment-specific guidance.
- Restrict access to Octavia log files to authorized administrators only.
- Rotate private keys or secrets found in exposed logs.
- Review operational logging to avoid writing sensitive material.
Validation and detection
- Inventory RHOSP Director deployments using Octavia.
- Compare installed openstack-octavia versions against the fixed versions.
- Check Octavia log file permissions for world-readable access.
- Review relevant logs for exposed private keys or secrets.
- Confirm secret rotation where sensitive data was logged.
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-532: 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-2018-16856 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
- 5.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.5MediumVector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16856CVE reference · x_refsource_CONFIRM
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.
Insertion of Sensitive Information into Log File
Insertion of Sensitive Information into Log File represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.