Security readout for executives and security teams
Plain-English summary
CVE-2018-1000167 affects the alpha 1.0.0a1 release of suricata-update. If it reads malicious YAML while listing rule sources, code could run on the host, potentially as root when the tool is run as root. The source bundle says this was fixed in 1.0.0b1.
Executive priority
Prioritize remediation where Suricata rule updates are automated or run as root. The vulnerable release is an alpha version, but the impact described is remote code execution, so exposed installations should be handled urgently.
Technical view
The issue is insecure deserialization through Python yaml.load usage in config.py and sources.py. The affected command is list-sources, with exploitation described via a crafted rules index YAML file. The CVE record names suricata-update 1.0.0a1 as affected and 1.0.0b1 as fixed.
Likely exposure
Exposure is likely limited to environments that installed suricata-update 1.0.0a1, especially automation that runs list-sources or fetches rule-source metadata. Risk is higher where the tool runs with elevated privileges.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. Public references describe remote code execution potential through malicious YAML parsing, including root impact if suricata-update is executed as root.
Researcher notes
Evidence is concise and version-specific. The affected surfaces named are yaml.load calls in config.py and sources.py, with list-sources explicitly affected. No CVSS, CWE, affected CPEs, or active exploitation confirmation are present in the supplied bundle.
Mitigation direction
- Upgrade suricata-update from 1.0.0a1 to 1.0.0b1 or later.
- Remove 1.0.0a1 from build images, hosts, and automation.
- Avoid running suricata-update as root unless vendor guidance requires it.
- Review vendor guidance and OISF issue updates before changing operational workflows.
Validation and detection
- Inventory installed suricata-update versions across hosts, containers, and CI images.
- Check scheduled jobs or scripts that run list-sources or update rule metadata.
- Confirm upgraded systems report a version newer than 1.0.0a1.
- Review historical logs for unexpected suricata-update executions or rule-source changes.
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
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Execution 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-2018-1000167 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://tech.feedyourhead.at/content/remote-code-execution-in-suricata-updateCVE reference · x_refsource_MISC
- https://redmine.openinfosecfoundation.org/issues/2359CVE reference · x_refsource_MISC
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.