Summary
An unauthenticated path traversal vulnerability in JeeWMS allows remote attackers to access files outside the intended download location through a web endpoint's path parameter. The issue becomes risky when attacker- controlled path values are processed without canonicalization and the endpoint is reachable without authentication.
An unauthenticated path traversal vulnerability in JeeWMS allows remote attackers to access files outside the intended download location through a web endpoint's path parameter. The issue becomes risky when attacker- controlled path values are processed without canonicalization and the endpoint is reachable without authentication.
Affected context
The vulnerability occurs in JeeWMS deployments that expose the affected file viewing or download functionality and process user-controlled path values. It is particularly significant when the endpoint is reachable from an untrusted network and authentication or authorization checks do not protect the request path.
The vulnerability occurs in JeeWMS deployments that expose the affected file viewing or download functionality and process user-controlled path values. It is particularly significant when the endpoint is reachable from an untrusted network and authentication or authorization checks do not protect the request path.
Exploit preconditions
- Attack surface: Network-accessible HTTP file viewing or download endpoint - Required access: Ability to send unauthenticated requests to the endpoint - Trigger point: Processing of an attacker-controlled file path parameter - Why exploitation is possible: Path input is accepted without sufficient
traversal prevention, allowing resolution outside the intended directory
- Attack surface: Network-accessible HTTP file viewing or download endpoint - Required access: Ability to send unauthenticated requests to the endpoint - Trigger point: Processing of an attacker-controlled file path parameter - Why exploitation is possible: Path input is accepted without sufficient
traversal prevention, allowing resolution outside the intended directory
Why this happens
The underlying bug is improper restriction of external file paths. The application uses attacker-controlled path input to locate a file without reliably normalizing the path and enforcing that the result remains within an approved base directory. This behavior maps to CWE-22, Improper Limitation of a Pathname to a Restricted Directory, commonly known as path traversal.
The underlying bug is improper restriction of external file paths. The application uses attacker-controlled path input to locate a file without reliably normalizing the path and enforcing that the result remains within an approved base directory. This behavior maps to CWE-22, Improper Limitation of a Pathname to a Restricted Directory, commonly known as path traversal.
Potential impact
- An unauthenticated attacker may read sensitive local files.
- Exposed files could contain credentials, configuration data, or application secrets.
- Disclosure of operating system or deployment information could support further attacks.
- The vulnerability could contribute to broader system compromise if sensitive credentials are exposed.
- An unauthenticated attacker may read sensitive local files.
- Exposed files could contain credentials, configuration data, or application secrets.
- Disclosure of operating system or deployment information could support further attacks.
- The vulnerability could contribute to broader system compromise if sensitive credentials are exposed.
General mitigation guidance
Mitigation generally centers on removing trust from client-supplied file paths and enforcing a narrow, server-controlled file selection model. Secure patterns include mapping opaque identifiers to approved files, canonicalizing paths before authorization, verifying that resolved paths remain within an allowed directory, and rejecting traversal indicators and unexpected path formats. Authentication and authorization should be enforced consistently at the endpoint and surrounding request-processing layers. File-serving processes should use least-privilege accounts, minimize accessible data, and avoid exposing sensitive directories by default.
Mitigation generally centers on removing trust from client-supplied file paths and enforcing a narrow, server-controlled file selection model. Secure patterns include mapping opaque identifiers to approved files, canonicalizing paths before authorization, verifying that resolved paths remain within an allowed directory, and rejecting traversal indicators and unexpected path formats. Authentication and authorization should be enforced consistently at the endpoint and surrounding request-processing layers. File-serving processes should use least-privilege accounts, minimize accessible data, and avoid exposing sensitive directories by default.
How teams detect issues like this
Detection can include static analysis for filesystem APIs that concatenate request parameters into paths, along with code review of path normalization and authorization order. Dynamic testing and web application monitoring can look for rejected or unusual path parameters, repeated encoded separator patterns, and requests targeting files outside approved locations. Policy enforcement can require allowlisted file identifiers, centralized path validation, and security tests for every file-serving endpoint. Automated review tools may help identify common traversal-prone data flows.
Detection can include static analysis for filesystem APIs that concatenate request parameters into paths, along with code review of path normalization and authorization order. Dynamic testing and web application monitoring can look for rejected or unusual path parameters, repeated encoded separator patterns, and requests targeting files outside approved locations. Policy enforcement can require allowlisted file identifiers, centralized path validation, and security tests for every file-serving endpoint. Automated review tools may help identify common traversal-prone data flows.
