gsd-2021-41267
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Symfony/Http-Kernel is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the "trusted_headers" allowed list are ignored and protect users from "Cache poisoning" attacks. In Symfony 5.2, maintainers added support for the `X-Forwarded-Prefix` headers, but this header was accessible in SubRequest, even if it was not part of the "trusted_headers" allowed list. An attacker could leverage this opportunity to forge requests containing a `X-Forwarded-Prefix` header, leading to a web cache poisoning issue. Versions 5.3.12 and later have a patch to ensure that the `X-Forwarded-Prefix` header is not forwarded to subrequests when it is not trusted.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-41267",
"description": "Symfony/Http-Kernel is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the \"trusted_headers\" allowed list are ignored and protect users from \"Cache poisoning\" attacks. In Symfony 5.2, maintainers added support for the `X-Forwarded-Prefix` headers, but this header was accessible in SubRequest, even if it was not part of the \"trusted_headers\" allowed list. An attacker could leverage this opportunity to forge requests containing a `X-Forwarded-Prefix` header, leading to a web cache poisoning issue. Versions 5.3.12 and later have a patch to ensure that the `X-Forwarded-Prefix` header is not forwarded to subrequests when it is not trusted.",
"id": "GSD-2021-41267"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-41267"
],
"details": "Symfony/Http-Kernel is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the \"trusted_headers\" allowed list are ignored and protect users from \"Cache poisoning\" attacks. In Symfony 5.2, maintainers added support for the `X-Forwarded-Prefix` headers, but this header was accessible in SubRequest, even if it was not part of the \"trusted_headers\" allowed list. An attacker could leverage this opportunity to forge requests containing a `X-Forwarded-Prefix` header, leading to a web cache poisoning issue. Versions 5.3.12 and later have a patch to ensure that the `X-Forwarded-Prefix` header is not forwarded to subrequests when it is not trusted.",
"id": "GSD-2021-41267",
"modified": "2023-12-13T01:23:27.107483Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2021-41267",
"STATE": "PUBLIC",
"TITLE": "Webcache Poisoning in Symfony"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "symfony",
"version": {
"version_data": [
{
"version_value": "\u003e= 5.2.0, \u003c 5.3.12"
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"value": "Symfony/Http-Kernel is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the \"trusted_headers\" allowed list are ignored and protect users from \"Cache poisoning\" attacks. In Symfony 5.2, maintainers added support for the `X-Forwarded-Prefix` headers, but this header was accessible in SubRequest, even if it was not part of the \"trusted_headers\" allowed list. An attacker could leverage this opportunity to forge requests containing a `X-Forwarded-Prefix` header, leading to a web cache poisoning issue. Versions 5.3.12 and later have a patch to ensure that the `X-Forwarded-Prefix` header is not forwarded to subrequests when it is not trusted."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"version": "3.1"
}
},
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"description": [
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"lang": "eng",
"value": "CWE-444: Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)"
}
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{
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{
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"discovery": "UNKNOWN"
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"gitlab.com": {
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"date": "2021-11-30",
"description": "`Symfony/Http-Kernel` is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the `trusted_headers` allowed list are ignored and protect users from Cache poisoning attacks. In Symfony, maintainers added support for the `X-Forwarded-Prefix` headers, but this header was accessible in SubRequest, even if it was not part of the `trusted_headers` allowed list. An attacker could leverage this opportunity to forge requests containing a `X-Forwarded-Prefix` header, leading to a web cache poisoning issue. have a patch to ensure that the `X-Forwarded-Prefix` header is not forwarded to subrequests when it is not trusted.",
"fixed_versions": [
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],
"identifier": "CVE-2021-41267",
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"GHSA-q3j3-w37x-hq2q"
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"not_impacted": "All versions before 5.2.0, all versions starting from 5.3.12",
"package_slug": "packagist/symfony/http-kernel",
"pubdate": "2021-11-24",
"solution": "Upgrade to version 5.3.12 or above.",
"title": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-41267",
"https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q",
"https://github.com/symfony/symfony/releases/tag/v5.3.12",
"https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487",
"https://github.com/symfony/symfony/pull/44243"
],
"uuid": "b3004c66-43b4-431e-892c-8d13e7d68038"
},
{
"affected_range": "\u003e=5.2.0,\u003c5.3.12",
"affected_versions": "All versions starting from 5.2.0 before 5.3.12",
"cvss_v2": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"cwe_ids": [
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"CWE-444",
"CWE-937"
],
"date": "2021-11-30",
"description": "`Symfony/Http-Kernel` is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the `trusted_headers` allowed list are ignored and protect users from Cache poisoning attacks. In Symfony, maintainers added support for the `X-Forwarded-Prefix` headers, but this header was accessible in SubRequest, even if it was not part of the `trusted_headers` allowed list. An attacker could leverage this opportunity to forge requests containing a `X-Forwarded-Prefix` header, leading to a web cache poisoning issue.",
"fixed_versions": [
"5.4.0"
],
"identifier": "CVE-2021-41267",
"identifiers": [
"CVE-2021-41267",
"GHSA-q3j3-w37x-hq2q"
],
"not_impacted": "All versions before 5.2.0, all versions starting from 5.3.12",
"package_slug": "packagist/symfony/security-http",
"pubdate": "2021-11-24",
"solution": "Upgrade to version 5.4.0 or above.",
"title": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-41267",
"https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q",
"https://github.com/symfony/symfony/releases/tag/v5.3.12",
"https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487",
"https://github.com/symfony/symfony/pull/44243"
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"uuid": "84a7c5cc-2a3e-4722-98f9-aa1910f1a817"
},
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"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
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],
"date": "2021-11-30",
"description": "`Symfony/Http-Kernel` is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the `trusted_headers` allowed list are ignored and protect users from Cache poisoning attacks. In Symfony, maintainers added support for the `X-Forwarded-Prefix` headers, but this header was accessible in SubRequest, even if it was not part of the `trusted_headers` allowed list. An attacker could leverage this opportunity to forge requests containing a `X-Forwarded-Prefix` header, leading to a web cache poisoning issue.",
"fixed_versions": [
"5.3.12"
],
"identifier": "CVE-2021-41267",
"identifiers": [
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"GHSA-q3j3-w37x-hq2q"
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"not_impacted": "All versions before 5.2.0, all versions starting from 5.3.12",
"package_slug": "packagist/symfony/symfony",
"pubdate": "2021-11-24",
"solution": "Upgrade to version 5.3.12 or above.",
"title": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-41267",
"https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q",
"https://github.com/symfony/symfony/releases/tag/v5.3.12",
"https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487",
"https://github.com/symfony/symfony/pull/44243"
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"versionEndExcluding": "5.3.12",
"versionStartIncluding": "5.2.0",
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": true
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"version": "3.1"
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"exploitabilityScore": 2.8,
"impactScore": 3.6
}
},
"lastModifiedDate": "2021-11-30T18:52Z",
"publishedDate": "2021-11-24T19:15Z"
}
}
}
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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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