add advisory for biscuit-haskell 0.3.x

advisories/hackage/biscuit-haskell/HSEC-2024-0009.md

@@ -0,0 +1,30 @@
+```toml
+[advisory]
+id = "HSEC-2024-0009"
+keywords = ["biscuit"]
+aliases = ["CVE-2024-41949", "GHSA-rgqv-mwc3-c78m", "GHSA-47cq-pc2v-3rmp"]
+
+[[references]]
+type = "ADVISORY"
+url = "https://github.com/biscuit-auth/biscuit-haskell/security/advisories/GHSA-47cq-pc2v-3rmp"
+[[references]]
+type = "FIX"
+url = "https://github.com/biscuit-auth/biscuit-haskell/pull/93"
+
+[[affected]]
+package = "biscuit-haskell"
+cvss = "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N"
+
+[[affected.versions]]
+introduced = "0.3.0.0"
+fixed = "0.4.0.0"
+```
+
+# Public key confusion in third-party blocks
+
+Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a `ThirdPartyBlock` request can be sent, providing only the necessary info to generate a third-party block and to sign it:
+
+- the public key of the previous block (used in the signature);
+- the public keys part of the token symbol table (for public key interning in datalog expressions).
+
+A third-party block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair.