GHSA-352x-hc2f-fwff CVE-2019-16317 SNYK-PHP-PIMCOREPIMCORE-451599
Pimcore RCE via PHAR upload
- Severity
- 8.8 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 1.70%
- Chance of exploitation in the next 30 days. Higher than 77.19% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-502 Deserialization of Untrusted Data
- Fix
5.7.1- Upgrade pimcore/pimcore to this version or later
Description
In Pimcore before 5.7.1, an attacker with limited privileges can trigger execution of a .phar file via a phar:// URL in a filename parameter, because PHAR uploads are not blocked and are reachable within the phar://../../../../../../../../var/www/html/web/var/assets/ directory, a different vulnerability than CVE-2019-10867 and CVE-2019-16318.
Affected versions
Packagist
| Package | Vulnerable | Fixed in |
|---|---|---|
| pimcore/pimcore | < 5.7.1 |
5.7.1 |
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.
pimcore/pimcore Packagist → 5.7.1
- composer
composer require pimcore/pimcore:^5.7.1
Severity breakdown
CVSS 3.1 8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Weakness
CWE-502: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How to prevent it
- Architecture and Design, Implementation: If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- Implementation: When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Implementation: Explicitly define a final object() to prevent deserialization.
- Architecture and Design, Implementation: Make fields transient to protect them from deserialization. An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.
- Implementation: Avoid having unnecessary types or gadgets (a sequence of instances and method invocations that can self-execute during the deserialization process, often found in libraries) available that can be leveraged for malicious ends. This limits the potential for unintended or unauthorized types and gadgets to be leveraged by the attacker. Add only acceptable classes to an allowlist. Note: new gadgets are constantly being discovered, so this alone is not a sufficient mitigation.
- Architecture and Design, Implementation: Employ cryptography of the data or code for protection. However, it's important to note that it would still be client-side security. This is risky because if the client is compromised then the security implemented on the client (the cryptography) can be bypassed.
- Operation: Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].
References
Advisories
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-23rh-xw42-fq82 Pimcore: SQL Injection in Custom Reports via Malicious Report Configuration | High | Also affects pimcore/pimcore |
| GHSA-9x44-4gxf-8c25 Pimcore Vulnerable to Remote Code Execution via DataObject Class-Definition Field Name | Critical | Also affects pimcore/pimcore |
| GHSA-w23p-wrp7-ch38 Pimcore Hotspotimage getDataFromResource() unrestricted Serialize::unserialize over object-store column (PHP Object Injection, CWE-502) | Critical | Also affects pimcore/pimcore |
| GHSA-2mhj-fhvg-v428 Pimcore: ClassDefinition UID regex missing end anchor allows SQL injection via Block.php unquoted table name | High | Also affects pimcore/pimcore |
| GHSA-7p36-fq2r-4h7r Pimcore CMS Twig Sandbox Bypass via SecurityPolicy checkMethodAllowed | High | Also affects pimcore/pimcore |
| GHSA-jwcc-gv4m-93x6 Pimcore has a CustomReports Share Bypass | High | Also affects pimcore/pimcore |
| GHSA-332x-r494-54fq Pimcore has a WordExport Authorization Bypass for Unauthorized Document Export | Medium | Also affects pimcore/pimcore |
| GHSA-wc7j-g8wx-m2qx Pimcore: Missing Authorization in WebDAV MOVE via unchecked asset move handling | High | Also affects pimcore/pimcore |
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