CVE-2020-26244
CVSS V2 Medium 4.9
CVSS V3 Medium 6.8
Description
Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA `none` algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future). These issues are patched in version 1.2.1.
Overview
- CVE ID
- CVE-2020-26244
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2020-12-02T20:15:13
- Last Modified Date
- 2020-12-08T02:37:03
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:python_openid_connect_project:python_openid_connect:*:*:*:*:*:*:*:* | 1 | OR | 1.2.1 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:S/C:P/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 4.9
- Severity
- MEDIUM
- Exploitability Score
- 6.8
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 6.8
- Base Severity
- MEDIUM
- Exploitability Score
- 1.6
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg | Third Party Advisory |
| https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498 | Patch Third Party Advisory |
| https://pypi.org/project/oic/ | Product Vendor Advisory |
| https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-26244 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26244 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:31:04 | Added to TrackCVE | |||
| 2022-12-05 17:32:03 | 2020-12-02T20:15Z | 2020-12-02T20:15:13 | CVE Published Date | updated |
| 2022-12-05 17:32:03 | 2020-12-08T02:37:03 | CVE Modified Date | updated | |
| 2022-12-05 17:32:03 | Analyzed | Vulnerability Status | updated |