GO-2023-1765

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Source

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

Import Source

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

JSON Data

https://api.osv.dev/v1/vulns/GO-2023-1765

Aliases

Published

2023-05-24T15:32:51Z

Modified

2024-05-20T16:03:47Z

Summary

Leaked shared secret and weak blinding in github.com/cloudflare/circl

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.

Database specific

{
    "url": "https://pkg.go.dev/vuln/GO-2023-1765",
    "review_status": "REVIEWED"
}

References

Affected packages

Go / github.com/cloudflare/circl

Package

Name: github.com/cloudflare/circl; View open source insights on deps.dev
Purl: pkg:golang/github.com/cloudflare/circl

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.3.3

Ecosystem specific

{
    "imports": [
        {
            "symbols": [
                "EncryptCCA"
            ],
            "path": "github.com/cloudflare/circl/abe/cpabe/tkn20/internal/tkn"
        },
        {
            "symbols": [
                "RSAVerifier.Blind"
            ],
            "path": "github.com/cloudflare/circl/blindsign/blindrsa"
        },
        {
            "symbols": [
                "PublicKey.EncapsulateTo",
                "scheme.Encapsulate",
                "scheme.EncapsulateDeterministically"
            ],
            "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": [
                "scheme.Encapsulate"
            ],
            "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"
        }
    ]
}