GO-2023-1765

Source

https://pkg.go.dev/vuln/GO-2023-1765

Import Source

https://vuln.go.dev/ID/GO-2023-1765.json

Aliases

Published

2023-05-24T15:32:51Z

Modified

2023-11-08T04:11:18.953209Z

Details

When sampling randomness for a shared secret, the implementation of Kyber and FrodoKEM, did not check whether crypto/rand.Read() returns an error. In rare deployment cases (error thrown by the Read() function), this could lead to a predictable shared secret.

The tkn20 and blindrsa components did not check whether enough randomness was returned from the user provided randomness source. Typically the user provides crypto/rand.Reader, which in the vast majority of cases will always return the right number random bytes. In the cases where it does not, or the user provides a source that does not, the blinding for blindrsa is weak and integrity of the plaintext is not ensured in tkn20.

References

Affected packages

Go / github.com/cloudflare/circl

Package

Name: github.com/cloudflare/circl

Affected ranges

Type: SEMVER
Events: Introduced

0The exact introduced commit is unknown

Fixed

1.3.3

Ecosystem specific

{
    "imports": [
        {
            "path": "github.com/cloudflare/circl/abe/cpabe/tkn20/internal/tkn",
            "symbols": [
                "EncryptCCA"
            ]
        },
        {
            "path": "github.com/cloudflare/circl/blindsign/blindrsa",
            "symbols": [
                "RSAVerifier.Blind"
            ]
        },
        {
            "path": "github.com/cloudflare/circl/kem/frodo/frodo640shake",
            "symbols": [
                "PublicKey.EncapsulateTo",
                "scheme.Encapsulate",
                "scheme.EncapsulateDeterministically"
            ]
        },
        {
            "path": "github.com/cloudflare/circl/kem/kyber/kyber1024",
            "symbols": [
                "PublicKey.EncapsulateTo",
                "scheme.Encapsulate",
                "scheme.EncapsulateDeterministically"
            ]
        },
        {
            "path": "github.com/cloudflare/circl/kem/kyber/kyber512",
            "symbols": [
                "PublicKey.EncapsulateTo",
                "scheme.Encapsulate",
                "scheme.EncapsulateDeterministically"
            ]
        },
        {
            "path": "github.com/cloudflare/circl/kem/kyber/kyber768",
            "symbols": [
                "PublicKey.EncapsulateTo",
                "scheme.Encapsulate",
                "scheme.EncapsulateDeterministically"
            ]
        },
        {
            "path": "github.com/cloudflare/circl/kem/sike/sikep434",
            "symbols": [
                "scheme.Encapsulate"
            ]
        },
        {
            "path": "github.com/cloudflare/circl/kem/sike/sikep503",
            "symbols": [
                "scheme.Encapsulate"
            ]
        },
        {
            "path": "github.com/cloudflare/circl/kem/sike/sikep751",
            "symbols": [
                "scheme.Encapsulate"
            ]
        }
    ]
}