Summary
A path traversal vulnerability in TaskingAI's DALL-E 3 image generation tool allows manipulated project identifiers to influence where downloaded images are saved. An attacker who can reach the affected functionality may write files to unintended locations on the server, subject to the process's filesystem permissions.
A path traversal vulnerability in TaskingAI's DALL-E 3 image generation tool allows manipulated project identifiers to influence where downloaded images are saved. An attacker who can reach the affected functionality may write files to unintended locations on the server, subject to the process's filesystem permissions.
Affected context
The vulnerability occurs in TaskingAI v0.3.0 within the DALL-E 3 image generation tool's save_url_image function. It becomes risky when the project_id parameter is incorporated into a filesystem path without sufficient canonicalization, validation, or confinement to an intended storage directory.
The vulnerability occurs in TaskingAI v0.3.0 within the DALL-E 3 image generation tool's save_url_image function. It becomes risky when the project_id parameter is incorporated into a filesystem path without sufficient canonicalization, validation, or confinement to an intended storage directory.
Exploit preconditions
- Attack surface: The DALL-E 3 image generation functionality and its image-saving workflow
- Required access: Ability to invoke the affected functionality and influence the project_id parameter
- Trigger point: Processing the project identifier while constructing the destination path for a downloaded image
- Why exploitation is possible: Path components derived from attacker-influenced input may escape the intended directory when the application does not enforce a trusted, canonical storage path
- Attack surface: The DALL-E 3 image generation functionality and its image-saving workflow
- Required access: Ability to invoke the affected functionality and influence the project_id parameter
- Trigger point: Processing the project identifier while constructing the destination path for a downloaded image
- Why exploitation is possible: Path components derived from attacker-influenced input may escape the intended directory when the application does not enforce a trusted, canonical storage path
Why this happens
The underlying bug is insufficient validation and containment of attacker-controlled path data. When a project identifier is used directly or inadequately normalized in a filesystem path, traversal sequences or equivalent path representations may cause file operations to resolve outside the intended 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 insufficient validation and containment of attacker-controlled path data. When a project identifier is used directly or inadequately normalized in a filesystem path, traversal sequences or equivalent path representations may cause file operations to resolve outside the intended directory. This behavior maps to CWE-22, Improper Limitation of a Pathname to a Restricted Directory, commonly known as path traversal.
Potential impact
- An attacker may write downloaded content to unintended server filesystem locations.
- Sensitive files could be overwritten if the service account has sufficient permissions.
- Application integrity could be affected through modification of writable configuration or data files.
- The service could experience disruption if critical files are damaged or storage is exhausted.
- In some deployments, arbitrary file placement could contribute to further compromise.
- An attacker may write downloaded content to unintended server filesystem locations.
- Sensitive files could be overwritten if the service account has sufficient permissions.
- Application integrity could be affected through modification of writable configuration or data files.
- The service could experience disruption if critical files are damaged or storage is exhausted.
- In some deployments, arbitrary file placement could contribute to further compromise.
General mitigation guidance
Mitigation generally focuses on making storage paths server-controlled and
reducing trust in user-supplied identifiers.
Common defensive patterns include:
- Treating project identifiers as opaque values rather than filesystem path components.
- Allowlisting a strict identifier format and rejecting traversal markers, separators, and encoded equivalents.
- Resolving candidate paths canonically and verifying that they remain beneath a dedicated storage directory.
- Generating destination filenames and directories independently of attacker-controlled input.
- Using a dedicated, least-privileged service account with access only to required storage locations.
- Applying filesystem permissions, quotas, and sandboxing that limit the consequences of unintended writes.
Mitigation generally focuses on making storage paths server-controlled and
reducing trust in user-supplied identifiers.
Common defensive patterns include:
- Treating project identifiers as opaque values rather than filesystem path components.
- Allowlisting a strict identifier format and rejecting traversal markers, separators, and encoded equivalents.
- Resolving candidate paths canonically and verifying that they remain beneath a dedicated storage directory.
- Generating destination filenames and directories independently of attacker-controlled input.
- Using a dedicated, least-privileged service account with access only to required storage locations.
- Applying filesystem permissions, quotas, and sandboxing that limit the consequences of unintended writes.
How teams detect issues like this
Detection approaches can include:
- Static analysis for filesystem APIs that concatenate or format paths with request parameters.
- Code review checks for missing canonical-path containment tests around file writes.
- Tests using encoded, normalized, and separator-based path variants to verify storage confinement.
- Runtime monitoring for writes outside approved application directories.
- Policy enforcement requiring allowlisted identifiers and centralized safe-path helpers.
- Automated security review tools may help identify path construction patterns, but findings should be validated against deployment behavior and permissions.
Detection approaches can include:
- Static analysis for filesystem APIs that concatenate or format paths with request parameters.
- Code review checks for missing canonical-path containment tests around file writes.
- Tests using encoded, normalized, and separator-based path variants to verify storage confinement.
- Runtime monitoring for writes outside approved application directories.
- Policy enforcement requiring allowlisted identifiers and centralized safe-path helpers.
- Automated security review tools may help identify path construction patterns, but findings should be validated against deployment behavior and permissions.
Sources
| Source | Link |
|---|---|
| gist. | gist.github.com/ |
| github. | github.com/ |
