CVE-2023-46233 crypto-js PBKDF2 1,000 times weaker than specified in 1993 and 1.3M times weaker than current standard

2023-10-2520:49:31

CWE-328

CWE-916

GitHub_M

www.cve.org

cve-2023-46233

crypto-js

pbkdf2

sha1

weakness

sha256

iteration count

patch

9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

9.3 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

29.6%

JSON

crypto-js is a JavaScript library of crypto standards. Prior to version 4.2.0, crypto-js PBKDF2 is 1,000 times weaker than originally specified in 1993, and at least 1,300,000 times weaker than current industry standard. This is because it both defaults to SHA1, a cryptographic hash algorithm considered insecure since at least 2005, and defaults to one single iteration, a ‘strength’ or ‘difficulty’ value specified at 1,000 when specified in 1993. PBKDF2 relies on iteration count as a countermeasure to preimage and collision attacks. If used to protect passwords, the impact is high. If used to generate signatures, the impact is high. Version 4.2.0 contains a patch for this issue. As a workaround, configure crypto-js to use SHA256 with at least 250,000 iterations.

CNA Affected

[
  {
    "vendor": "brix",
    "product": "crypto-js",
    "versions": [
      {
        "version": "< 4.2.0",
        "status": "affected"
      }
    ]
  }
]