GHSA-4mvc-qc5w-v5qr CVE-2019-19712
Information disclosure in the Contao backend
- Severity
- 5.3 / 10
- Medium · CVSS 3.1
- Exploit chance (EPSS)
- 0.88%
- Chance of exploitation in the next 30 days. Higher than 59.12% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-276 Incorrect Default Permissions
- Fix
- Available
- 2 packages have a fixed version
Description
Impact
Back end users can manipulate the details view URL to show pages and articles that have not been enabled for them.
Patches
Update to Contao 4.4.46 or 4.8.6.
Workarounds
None.
References
https://contao.org/en/security-advisories/information-disclosure-in-the-back-end
For more information
If you have any questions or comments about this advisory, open an issue in contao/contao.
Affected versions
Packagist
| Package | Vulnerable | Fixed in |
|---|---|---|
| contao/contao | >= 4.0.0, < 4.4.46 |
4.4.46 |
| contao/contao | >= 4.5.0, < 4.8.6 |
4.8.6 |
| contao/core-bundle | >= 4.0.0, < 4.4.46 |
4.4.46 |
| contao/core-bundle | >= 4.5.0, < 4.8.6 |
4.8.6 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
contao/contao Packagist → 4.4.46
- composer
composer require contao/contao:^4.4.46
contao/core-bundle Packagist → 4.4.46
- composer
composer require contao/core-bundle:^4.4.46
Severity breakdown
CVSS 3.1 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Weakness
CWE-276: Incorrect Default Permissions
During installation, installed file permissions are set to allow anyone to modify those files.
How to prevent it
- Architecture and Design, Operation: The architecture needs to access and modification attributes for files to only those users who actually require those actions.
- Architecture and Design: Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
References
Advisories
Packages
Other links
- github.com/contao/contao/security/advisories/GHSA-4mvc-qc5w-v5qr
- contao.org/en/news.html
- contao.org/en/security-advisories/information-disclosure-in-the-back-end.html
- github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2019-…
- github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-…
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-9ff2-p842-45wq Contao: Cross-site request forgery in custom backend actions | Low | Also affects contao/core-bundle |
| GHSA-q6wp-fr43-gm9v Contao: Improper access control in the preview links module | Medium | Also affects contao/core-bundle |
| GHSA-5974-gfqc-wrcm Contao: Improper access control in the table access voter | Medium | Also affects contao/core-bundle |
| GHSA-mrvp-7wmx-5m4h Contao: Path traversal in the images controller | Medium | Also affects contao/core-bundle |
| GHSA-mfxh-vp55-7gc6 Contao: The registration module re-sends activation mails | Medium | Also affects contao/core-bundle |
| GHSA-x2rp-9qf7-2fmq Contao: Protected page content is disclosed to anonymous visitors after contao.search.index_protected is disabled | Medium | Also affects contao/core-bundle |
| GHSA-grm4-wm43-9jh5 Contao: Possible path traversal in job download URIs | Low | Also affects contao/contao |
| GHSA-87mg-5grr-rhwh Contao: Server-Side Request Forgery (SSRF) via Unvalidated RSS Feed URL in Feed Reader Module | Low | Also affects contao/contao |
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