GHSA-3fvg-4v2m-98jf

Source

https://github.com/advisories/GHSA-3fvg-4v2m-98jf

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/06/GHSA-3fvg-4v2m-98jf/GHSA-3fvg-4v2m-98jf.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-3fvg-4v2m-98jf

Aliases

CVE-2022-25898

Published

2022-06-25T07:19:06Z

Modified

2025-01-14T10:57:26.432483Z

Severity

8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N CVSS Calculator

Summary

JWS and JWT signature validation vulnerability with special characters

Details

Impact

Jsrsasign supports JWS(JSON Web Signatures) and JWT(JSON Web Token) validation. However JWS or JWT signature with non Base64URL encoding special characters or number escaped characters may be validated as valid by mistake.

For example, even if a string of non Base64URL encoding characters such as !@$% or \11 is inserted into a valid JWS or JWT signature value string, it will still be a valid JWS or JWT signature by mistake.

When jsrsasign's JWS or JWT validation is used in OpenID connect or OAuth2, this vulnerability will affect to authentication or authorization.

By our internal assessment, CVSS 3.1 score will be 8.6. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Patches

Users validate JWS or JWT signatures should upgrade to 10.5.25.

Workarounds

Validate JWS or JWT signature if it has Base64URL and dot safe string before executing JWS.verify() or JWS.verifyJWT() method.

ACKNOWLEDGEMENT

Thanks to Adi Malyanker and Or David for this vulnerability report. Also thanks for Snyk security team for this coordination.

References

https://github.com/kjur/jsrsasign/releases/tag/10.5.25 https://github.com/kjur/jsrsasign/security/advisories/GHSA-3fvg-4v2m-98jf kjur's advisories https://github.com/advisories/GHSA-3fvg-4v2m-98jf github advisories https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-25898 https://kjur.github.io/jsrsasign/api/symbols/KJUR.jws.JWS.html#.verifyJWT https://kjur.github.io/jsrsasign/api/symbols/KJUR.jws.JWS.html#.verify https://kjur.github.io/jsrsasign/api/symbols/global__.html#.isBase64URLDot https://github.com/kjur/jsrsasign/wiki/Tutorial-for-JWS-verification https://github.com/kjur/jsrsasign/wiki/Tutorial-for-JWT-verification https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-2869122

Database specific

{
    "nvd_published_at": "2022-07-01T20:15:00Z",
    "github_reviewed_at": "2022-06-25T07:19:06Z",
    "severity": "HIGH",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-347"
    ]
}

References

Affected packages

npm / jsrsasign

Package

Name: jsrsasign; View open source insights on deps.dev
Purl: pkg:npm/jsrsasign

Affected ranges

Type: SEMVER
Events: Introduced

4.8.0

Fixed

10.5.25