Description
xml-security is a library that implements XML signatures and encryption. Validation of an XML signature requires verification that the hash value of the related XML-document matches a specific DigestValue-value, but also that the cryptographic signature on the SignedInfo-tree (the one that contains the DigestValue) verifies and matches a trusted public key. If an attacker somehow (i.e. by exploiting a bug in PHP's canonicalization function) manages to manipulate the canonicalized version's DigestValue, it would be possible to forge the signature. This issue has been patched in version 1.6.12 and 5.0.0-alpha.13.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| simplesamlphp | xml-security | = 1.6.11, = 5.0.0-alpha.12 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | simplesamlphp/saml2 | >= 5.0.0-alpha.12, < 5.0.0-alpha.13 | 5.0.0-alpha.13 | GHSA-ww7x-3gxh-qm6r |
| Packagist | simplesamlphp/xml-security | >= 1.6.11, < 1.6.12 | 1.6.12 | GHSA-ww7x-3gxh-qm6r |