gsd-2020-8843
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a source.uid in this header. This feature is disabled by default in Istio 1.3 and 1.4.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-8843",
"description": "An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a source.uid in this header. This feature is disabled by default in Istio 1.3 and 1.4.",
"id": "GSD-2020-8843"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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],
"details": "An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a source.uid in this header. This feature is disabled by default in Istio 1.3 and 1.4.",
"id": "GSD-2020-8843",
"modified": "2023-12-13T01:21:54.482096Z",
"schema_version": "1.4.0"
}
},
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"affects": {
"vendor": {
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}
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"gitlab.com": {
"advisories": [
{
"affected_range": "\u003e=v1.3.0 \u003c=v1.3.6",
"affected_versions": "All versions starting from 1.3.0 up to 1.3.6",
"cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-20",
"CWE-937"
],
"date": "2020-02-19",
"description": "Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the `x-istio-attributes` header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a `source.uid` in this header.",
"fixed_versions": [
"v1.3.7"
],
"identifier": "CVE-2020-8843",
"identifiers": [
"CVE-2020-8843"
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"not_impacted": "All versions after 1.3.7",
"package_slug": "go/github.com/istio/istio",
"pubdate": "2020-02-14",
"solution": "Upgrade to version 1.3.7 or later",
"title": "Improper Input Validation",
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"https://istio.io/news/security/",
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"uuid": "1c0656f7-aa14-4268-a384-a5fb8431ca45",
"versions": [
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"number": "v1.3.0"
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{
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"sha": "48148f5be3c6d84fe1fce8a0491d3c89593145a2",
"tags": [
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"timestamp": "20191122193638"
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"versionEndIncluding": "1.3.6",
"versionStartIncluding": "1.3.0",
"vulnerable": true
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"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
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"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.2
}
},
"lastModifiedDate": "2020-02-19T16:16Z",
"publishedDate": "2020-02-14T19:15Z"
}
}
}
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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.
- 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.