Description
Numerous components utilizing PHP's DOMDocument, SimpleXML, and xml_parse functionality are vulnerable to two types of attacks:
- XML eXternal Entity (XXE) Injection attacks. The above mentioned extensions are insecure by default, allowing external entities to be specified by adding a specific DOCTYPE element to XML documents and strings. By exploiting this vulnerability an application may be coerced to open arbitrary files and/or TCP connections.
- XML Entity Expansion (XEE) vectors, leading to Denial of Service vectors. XEE attacks occur when the XML DOCTYPE declaration includes XML entity definitions that contain either recursive or circular references; this leads to CPU and memory consumption, making Denial of Service exploits trivial to implement.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | zendframework/zend-json | >= 2.1.0, < 2.1.6 | 2.1.6 | GHSA-8x2v-pcg7-94f4 |
| Packagist | zendframework/zend-json | >= 2.2.0, < 2.2.6 | 2.2.6 | GHSA-8x2v-pcg7-94f4 |
References
- https://github.com/zendframework/zend-json/commit/078e77a6e59cdbf32a94691afe3523db340f5da9 web
- https://github.com/zendframework/zend-json/commit/7a747fbefe566c28a94b7e7ca37c15fc09ba4754 web
- https://github.com/zendframework/zend-json/commit/865f96ecbc5e080fccb5e75304ce06ac57d2ce22 web
- https://github.com/zendframework/zend-json/commit/89fc6f760478dc15519cb3ef4e4976425dc6ee10 web
- https://github.com/zendframework/zend-json/commit/9fe5103dc9be472fa0a443ca36619a2953b6f88e web
- https://github.com/zendframework/zend-json/commit/acc60fc3fe56f5b0ad218c4c5789b21f11bc3a89 web
- https://framework.zend.com/security/advisory/ZF2014-01 web
- https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zend-json/ZF2014-01.yaml web
- https://github.com/zendframework/zend-json package