Overview
- Description
- 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.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.3
- Impact score
- 1.4
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Severity
- MEDIUM
Weaknesses
- security-advisories@github.com
- CWE-400
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:lestrrat-go:jwx:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D883F8E3-02A2-4BC4-ADB3-F420624DD720",
"versionEndExcluding": "1.2.27"
},
{
"criteria": "cpe:2.3:a:lestrrat-go:jwx:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "566A6052-A735-4FDB-975D-47C594210E70",
"versionEndExcluding": "2.0.18",
"versionStartIncluding": "2.0.0"
}
],
"operator": "OR"
}
]
}
]