GHSA-4v55-cpmv-3vcm
CoreWCF: WS-Security Reference DigestMethod Algorithm-Suite Bypass
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| NuGet | CoreWCF.Primitives | < 1.8.1 | 1.8.1 |
| NuGet | CoreWCF.Primitives | >= 1.9.0, < 1.9.1 | 1.9.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
CoreWCF’s WS-Security 1.0 receive pipeline validates the `SignatureMethod` of an incoming `ds:SignedInfo` against the configured `SecurityAlgorithmSuite`, but does not validate the `DigestMethod` declared on each `ds:Reference`. As a result, a sender can populate `ds:SignedInfo` with `SignatureMethod` values the suite accepts (for example rsa-sha256 under Basic256Sha256) while declaring a per-reference `DigestMethod` the suite rejects (for example http://www.w3.org/2000/09/xmldsig#sha1). The signature is then verified where it permits SHA-1 digests, and the message is accepted.
### Patches
Fixed in CoreWCF v1.8.1 and v1.9.1
### Workarounds
None
References
External links from the advisory. They lead to third-party sites.