CVE-2023-49087
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.
How to fix
- simplesamlphp/xml-security1.6.12 or later
- simplesamlphp/saml25.0.0-alpha.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| simplesamlphp xml-security | 1.6.11 | — |
| simplesamlphp saml2 | 5.0.0 | — |
| simplesamlphp/xml-securityPackagist | 1.6.11 ≤ v < 1.6.12 | 1.6.12 |
| simplesamlphp/saml2Packagist | 5.0.0-alpha.12 ≤ v < 5.0.0-alpha.13 | 5.0.0-alpha.13 |
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