ghsa-267v-3v32-g6q5
Vulnerability from github
Impact
The package does not validate the ACS Location URI according to the SAML binding being parsed.
If abused, this flaw allows attackers to register malicious Service Providers at the IdP and inject Javascript in the ACS endpoint definition, achieving Cross-Site-Scripting (XSS) in the IdP context during the redirection at the end of a SAML SSO Flow.
Consequently, an attacker may perform any authenticated action as the victim once the victim’s browser loaded the SAML IdP initiated SSO link for the malicious service provider.
Note: The severity is considered “High” because the SP registration is commonly an unrestricted operation in IdPs, hence not requiring particular permissions or publicly accessible to ease the IdP interoperability.
Patches
This issue is fixed in 0.4.14
Workarounds
Users of the package can perform external validation of URLs provided in SAML metadata, or restrict the ability for end-users to upload arbitrary metadata.
References
This issue was reported by Francesco Lacerenza from Doyensec.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/crewjam/saml"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.4.14"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-45683"
],
"database_specific": {
"cwe_ids": [
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2023-10-17T14:20:59Z",
"nvd_published_at": "2023-10-16T19:15:11Z",
"severity": "HIGH"
},
"details": "### Impact\n\nThe package does not validate the ACS Location URI according to the SAML binding being parsed.\n\nIf abused, this flaw allows attackers to register malicious Service Providers at the IdP and inject Javascript in the ACS endpoint definition, achieving Cross-Site-Scripting (XSS) in the IdP context during the redirection at the end of a SAML SSO Flow.\n\nConsequently, an attacker may perform any authenticated action as the victim once the victim\u2019s browser loaded the SAML IdP initiated SSO link for the malicious service provider.\n\nNote: The severity is considered \u201cHigh\u201d because the SP registration is commonly an unrestricted operation in IdPs, hence not requiring particular permissions or publicly accessible to ease the IdP interoperability.\n\n### Patches\n\nThis issue is fixed in 0.4.14\n\n### Workarounds\n\nUsers of the package can perform external validation of URLs provided in SAML metadata, or restrict the ability for end-users to upload arbitrary metadata. \n\n### References\n\nThis issue was reported by Francesco Lacerenza from Doyensec.\n",
"id": "GHSA-267v-3v32-g6q5",
"modified": "2023-10-24T18:32:14Z",
"published": "2023-10-17T14:20:59Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/crewjam/saml/security/advisories/GHSA-267v-3v32-g6q5"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45683"
},
{
"type": "WEB",
"url": "https://github.com/crewjam/saml/commit/b07b16cf83c4171d16da4d85608cb827f183cd79"
},
{
"type": "PACKAGE",
"url": "https://github.com/crewjam/saml"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "Cross-site Scripting via missing Binding syntax validation"
}
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.
- 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.