Update from samael 0.0.19 to 0.0.22#10793
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This update broke a few tests because of samael's new behaviour of removing parts of the XML documents (in a process they call reducing) if they aren't signed. Notably this reducing process includes removing the signature nodes themselves, meaning Nexus cannot check the signature algorithm and reject the deprecated ones. Luckily the ServiceProvider builder now accepts an allowed signature algorithms list, and the values in the enum of allowed algorithms match the existing list we were checking against. There's also a behaviour change: this new version of samael will return a signature error for XML documents with comments. This means that instead of Nexus accepting SAML Responses with comments in them and correctly figuring out the canonicalized content, they will now be rejected, which still keeps us safe from the original vulnerability mentioned by the failing test comments, but could potentially cause an issue if a customer's IDP is sending documents with comments in them. This seems worth the tradeoff as version 0.0.22 contains what looks like a few security related fixes that we should pull in. Fixes oxidecomputer#10702
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I also pushed a test to validate that we reject documents signed with non-allowed signature algorithms |
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This update broke a few tests because of samael's new behaviour of removing parts of the XML documents (in a process they call reducing) if they aren't signed. Notably this reducing process includes removing the signature nodes themselves, meaning Nexus cannot check the signature algorithm and reject the deprecated ones. Luckily the ServiceProvider builder now accepts an allowed signature algorithms list, and the values in the enum of allowed algorithms match the existing list we were checking against.
There's also a behaviour change: this new version of samael will return a signature error for XML documents with comments. This means that instead of Nexus accepting SAML Responses with comments in them and correctly figuring out the canonicalized content, they will now be rejected, which still keeps us safe from the original vulnerability mentioned by the failing test comments, but could potentially cause an issue if a customer's IDP is sending documents with comments in them. This seems worth the tradeoff as version 0.0.22 contains what looks like a few security related fixes that we should pull in.
Fixes #10702