CVE-2024-53861: Detailed Vulnerability Analysis and Overview

Status: Awaiting Analysis - Last modified: 02-12-2024 Published: 29-11-2024

CVE-2024-53861
Vulnerability Scoring

2.2
/10

Attack Complexity Details

  • Attack Complexity: HIGH IMPACT
  • Attack Vector: NETWORK
  • Privileges Required: HIGH IMPACT
  • Scope: UNCHANGED
  • User Interaction: NONE

CIA Impact Definition

  • Confidentiality:
  • Integrity: Low Impact
  • Availability:

CVE-2024-53861 Vulnerability Summary

pyjwt is a JSON Web Token implementation in Python. An incorrect string comparison is run for `iss` checking, resulting in `"acb"` being accepted for `"_abc_"`. This is a bug introduced in version 2.10.0: checking the "iss" claim changed from `isinstance(issuer, list)` to `isinstance(issuer, Sequence)`. Since str is a Sequnce, but not a list, `in` is also used for string comparison. This results in `if "abc" not in "__abcd__":` being checked instead of `if "abc" != "__abc__":`. Signature checks are still present so real world impact is likely limited to denial of service scenarios. This issue has been patched in version 2.10.1. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Access Complexity Graph for CVE-2024-53861

Impact Analysis for CVE-2024-53861

CVE-2024-53861: Detailed Information and External References

EPSS

0.00045

EPSS %

0.17556

References

0.00045

CWE

CWE-697

CAPEC

0.00045

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

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

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