gsd-2020-26244
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
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.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-26244",
"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.",
"id": "GSD-2020-26244",
"references": [
"https://www.suse.com/security/cve/CVE-2020-26244.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-26244"
],
"details": "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.",
"id": "GSD-2020-26244",
"modified": "2023-12-13T01:22:08.827002Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2020-26244",
"STATE": "PUBLIC",
"TITLE": "Cryptographic issues in Python oic"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "pyoidc",
"version": {
"version_data": [
{
"version_value": "\u003c 1.2.1"
}
]
}
}
]
},
"vendor_name": "OpenIDC"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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"value": "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."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-325 Missing Required Cryptographic Step"
}
]
},
{
"description": [
{
"lang": "eng",
"value": "CWE-347 Improper Verification of Cryptographic Signature"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg",
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"url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"
},
{
"name": "https://pypi.org/project/oic/",
"refsource": "MISC",
"url": "https://pypi.org/project/oic/"
},
{
"name": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498",
"refsource": "MISC",
"url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"
},
{
"name": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1",
"refsource": "MISC",
"url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"
}
]
},
"source": {
"advisory": "GHSA-4fjv-pmhg-3rfg",
"discovery": "UNKNOWN"
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003c1.2.1",
"affected_versions": "All versions before 1.2.1",
"cvss_v2": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-347",
"CWE-937"
],
"date": "2020-12-08",
"description": "Python oic is a Python OpenID Connect implementation. In Python oic, there are several related cryptographic issues affecting client implementations that use the library.",
"fixed_versions": [
"1.2.1"
],
"identifier": "CVE-2020-26244",
"identifiers": [
"CVE-2020-26244",
"GHSA-4fjv-pmhg-3rfg"
],
"not_impacted": "All versions starting from 1.2.1",
"package_slug": "pypi/oic",
"pubdate": "2020-12-02",
"solution": "Upgrade to version 1.2.1 or above.",
"title": "Improper Verification of Cryptographic Signature",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-26244",
"https://pypi.org/project/oic/"
],
"uuid": "449091b8-538d-438f-87b6-cc21904b6591"
}
]
},
"nvd.nist.gov": {
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"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:python_openid_connect_project:python_openid_connect:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "1.2.1",
"vulnerable": true
}
],
"operator": "OR"
}
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"ID": "CVE-2020-26244"
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"description": {
"description_data": [
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"lang": "en",
"value": "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."
}
]
},
"problemtype": {
"problemtype_data": [
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"description": [
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"value": "CWE-347"
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"references": {
"reference_data": [
{
"name": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg",
"refsource": "CONFIRM",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"
},
{
"name": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498",
"refsource": "MISC",
"tags": [
"Patch",
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"url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"
},
{
"name": "https://pypi.org/project/oic/",
"refsource": "MISC",
"tags": [
"Product",
"Vendor Advisory"
],
"url": "https://pypi.org/project/oic/"
},
{
"name": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1",
"refsource": "MISC",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 4.9,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 6.8,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.6,
"impactScore": 5.2
}
},
"lastModifiedDate": "2020-12-08T02:37Z",
"publishedDate": "2020-12-02T20:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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