lestrrat-go/jwx is a Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies. A p2c parameter set too high in JWE's algorithm PBES2-* could lead to a denial of service. The JWE key management algorithms based on PBKDF2 require a JOSE Header Parameter called p2c (PBES2 Count). This parameter dictates the number of PBKDF2 iterations needed to derive a CEK wrapping key. Its primary purpose is to intentionally slow down the key derivation function, making password brute-force and dictionary attacks more resource- intensive. Therefore, if an attacker sets the p2c parameter in JWE to a very large number, it can cause a lot of computational consumption, resulting in a denial of service. This vulnerability has been addressed in commit `64f2a229b` which has been included in release version 1.2.27 and 2.0.18. Users are advised to upgrade. There are no known workarounds for this vulnerability.
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-12-04T23:42:53.061Z

Updated: 2023-12-04T23:42:53.061Z

Reserved: 2023-11-24T16:45:24.313Z


Link: CVE-2023-49290

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2023-12-05T00:15:09.190

Modified: 2024-03-04T22:59:00.657


Link: CVE-2023-49290

JSON object: View

cve-icon Redhat Information

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CWE