Security readout for executives and security teams
Plain-English summary
CVE-2020-5405 is a directory traversal flaw in Spring Cloud Config Server. An attacker able to send a crafted request to the server could make it serve configuration files outside the intended path. Business risk depends on whether those files contain secrets or sensitive operational settings.
Executive priority
Prioritize remediation where Config Server is internet-facing, shared across environments, or stores secrets. Treat this as a configuration confidentiality risk, not just a software version issue.
Technical view
Spring Cloud Config versions 2.2.x before 2.2.2, 2.1.x before 2.1.7, and older unsupported versions are affected in the spring-cloud-config-server module. The assigned weakness is CWE-23, directory traversal. The supplied data does not include CVSS scoring.
Likely exposure
Organizations are most exposed when Spring Cloud Config Server is reachable by untrusted users or networks and stores credentials, service endpoints, tokens, or environment-specific configuration. Internal-only deployments still matter if broad internal access exists.
Exploitation context
The supplied sources do not show active exploitation, and the CVE is not listed as KEV in the provided bundle. The vulnerability is request-driven and depends on an attacker reaching the Config Server interface.
Researcher notes
Evidence is limited to CVE and vendor references. No CVSS vector, exploit confirmation, or detailed workaround is included in the supplied bundle. Validate exposure by version, module use, network reachability, and sensitivity of served configuration data.
Mitigation direction
- Upgrade 2.2.x deployments to 2.2.2 or later.
- Upgrade 2.1.x deployments to 2.1.7 or later.
- Replace older unsupported Spring Cloud Config versions.
- Restrict Config Server access to trusted networks and authenticated clients.
- Review vendor guidance before applying compensating controls.
Validation and detection
- Inventory services running spring-cloud-config-server.
- Confirm deployed Spring Cloud Config versions against affected ranges.
- Check whether Config Server endpoints are reachable externally or broadly internally.
- Review exposed configuration repositories for secrets or sensitive settings.
- Verify upgrades are covered by regression tests before deployment.
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-23: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-5405 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
- 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://pivotal.io/security/cve-2020-5405CVE 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.
Relative Path Traversal
Relative Path Traversal represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.