CVE-2022-23541
Description
A flaw was found in the jsonwebtoken library. Affected versions of jsonwebtoken library can be misconfigured so that passing a poorly implemented key retrieval function will result in incorrect verification of tokens. Using a different algorithm and key combination in verification than what was used to sign the tokens, specifically, tokens signed with an asymmetric public key could be verified with a symmetric HS256 algorithm. This can lead to the successful validation of forged tokens.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5 | 6.3 | 5 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | High | Low | High |
| Privileges Required | Low | Low | Low |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | Low | Low | Low |
| Integrity Impact | Low | Low | Low |
| Availability Impact | Low | Low | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
cve.org: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Red Hat CVSS v3 Score Explanation
To exploit this vulnerability an authenticated user needs to send a specially crafted request to forge Public/Private Tokens. Hence, AC:H and PR:L. Confidentiality, Integrity, and Availability metrics are Low, because:
- Successful exploitation may lead to some loss of confidentiality, but it's not under attacker's control what information will be obtained.
- Theoretically, an attacker may be able to modify some data but does not have control over the consequences of that modification.
- An attacker is not able to determine if successful exploitation will affect the availability of the target environment.
Understanding the Weakness (CWE)
Access Control,Integrity,Confidentiality
Technical Impact: Gain Privileges or Assume Identity; Modify Application Data; Execute Unauthorized Code or Commands
An attacker could gain access to sensitive data and possibly execute unauthorized code.
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