GSD-2020-11077
Vulnerability from gsd - Updated: 2020-05-22 00:00Details
### Impact
This is a similar but different vulnerability to the one patched in 3.12.5 and 4.3.4.
A client could smuggle a request through a proxy, causing the proxy to send a response
back to another unknown client.
If the proxy uses persistent connections and the client adds another request in via HTTP
pipelining, the proxy may mistake it as the first request's body. Puma, however,
would see it as two requests, and when processing the second request, send back
a response that the proxy does not expect. If the proxy has reused the persistent
connection to Puma to send another request for a different client, the second response
from the first client will be sent to the second client.
### Patches
The problem has been fixed in Puma 3.12.6 and Puma 4.3.5.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-11077",
"description": "In Puma (RubyGem) before 4.3.5 and 3.12.6, a client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. If the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request\u0027s body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client. This is a similar but different vulnerability from CVE-2020-11076. The problem has been fixed in Puma 3.12.6 and Puma 4.3.5.",
"id": "GSD-2020-11077",
"references": [
"https://www.suse.com/security/cve/CVE-2020-11077.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "puma",
"purl": "pkg:gem/puma"
}
}
],
"aliases": [
"CVE-2020-11077",
"GHSA-w64w-qqph-5gxm"
],
"details": "### Impact\n\nThis is a similar but different vulnerability to the one patched in 3.12.5 and 4.3.4.\n\nA client could smuggle a request through a proxy, causing the proxy to send a response\nback to another unknown client.\n\nIf the proxy uses persistent connections and the client adds another request in via HTTP\npipelining, the proxy may mistake it as the first request\u0027s body. Puma, however,\nwould see it as two requests, and when processing the second request, send back\na response that the proxy does not expect. If the proxy has reused the persistent\nconnection to Puma to send another request for a different client, the second response\nfrom the first client will be sent to the second client.\n\n### Patches\n\nThe problem has been fixed in Puma 3.12.6 and Puma 4.3.5.",
"id": "GSD-2020-11077",
"modified": "2020-05-22T00:00:00.000Z",
"published": "2020-05-22T00:00:00.000Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": 6.8,
"type": "CVSS_V3"
}
],
"summary": "HTTP Smuggling via Transfer-Encoding Header in Puma"
}
},
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"ID": "CVE-2020-11077",
"STATE": "PUBLIC",
"TITLE": "HTTP Smuggling via Transfer-Encoding Header in Puma"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "puma",
"version": {
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},
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"value": "In Puma (RubyGem) before 4.3.5 and 3.12.6, a client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. If the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request\u0027s body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client. This is a similar but different vulnerability from CVE-2020-11076. The problem has been fixed in Puma 3.12.6 and Puma 4.3.5."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
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"description": [
{
"lang": "eng",
"value": "CWE-444: Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)"
}
]
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]
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"source": {
"advisory": "GHSA-w64w-qqph-5gxm",
"discovery": "UNKNOWN"
}
},
"github.com/rubysec/ruby-advisory-db": {
"cve": "2020-11077",
"cvss_v3": 6.8,
"date": "2020-05-22",
"description": "### Impact\n\nThis is a similar but different vulnerability to the one patched in 3.12.5 and 4.3.4.\n\nA client could smuggle a request through a proxy, causing the proxy to send a response\nback to another unknown client.\n\nIf the proxy uses persistent connections and the client adds another request in via HTTP\npipelining, the proxy may mistake it as the first request\u0027s body. Puma, however,\nwould see it as two requests, and when processing the second request, send back\na response that the proxy does not expect. If the proxy has reused the persistent\nconnection to Puma to send another request for a different client, the second response\nfrom the first client will be sent to the second client.\n\n### Patches\n\nThe problem has been fixed in Puma 3.12.6 and Puma 4.3.5.",
"gem": "puma",
"ghsa": "w64w-qqph-5gxm",
"patched_versions": [
"~\u003e 3.12.6",
"\u003e= 4.3.5"
],
"title": "HTTP Smuggling via Transfer-Encoding Header in Puma",
"url": "https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm"
},
"gitlab.com": {
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{
"affected_range": "\u003e=3.0.0 \u003c3.12.6||\u003e=4.0.0 \u003c4.3.5",
"affected_versions": "All versions starting from 3.0.0 before 3.12.6, all versions starting from 4.0.0 before 4.3.5",
"cvss_v2": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-444",
"CWE-937"
],
"date": "2020-10-07",
"description": "In GitLab Puma (RubyGem), a client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. If the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request\u0027s body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client.",
"fixed_versions": [
"4.3.5.gitlab.3"
],
"identifier": "CVE-2020-11077",
"identifiers": [
"CVE-2020-11077",
"GHSA-w64w-qqph-5gxm"
],
"not_impacted": "All versions before 3.0.0, all versions starting from 3.12.6 before 4.0.0, all versions starting from 4.3.5",
"package_slug": "gem/gitlab-puma",
"pubdate": "2020-05-22",
"solution": "Upgrade to version 4.3.5.gitlab.3 or above.",
"title": "Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-11077"
],
"uuid": "d98a909b-7ccd-4086-b7ab-54829322f8ee"
},
{
"affected_range": "\u003e=3.0.0 \u003c3.12.6||\u003e=4.0.0 \u003c4.3.5",
"affected_versions": "All versions starting from 3.0.0 before 3.12.6, all versions starting from 4.0.0 before 4.3.5",
"cvss_v2": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-444",
"CWE-937"
],
"date": "2020-10-07",
"description": " In Puma (RubyGem), a client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. If the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request\u0027s body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client.",
"fixed_versions": [
"3.12.6",
"4.3.5"
],
"identifier": "CVE-2020-11077",
"identifiers": [
"CVE-2020-11077",
"GHSA-w64w-qqph-5gxm"
],
"not_impacted": "All versions before 3.0.0, all versions starting from 3.12.6 before 4.0.0, all versions starting from 4.3.5",
"package_slug": "gem/puma",
"pubdate": "2020-05-22",
"solution": "Upgrade to versions 3.12.6, 4.3.5 or above.",
"title": "Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-11077"
],
"uuid": "1cd16c54-101c-455b-9267-b5e2904acc67"
}
]
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"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2023-03-03T14:41Z",
"publishedDate": "2020-05-22T15:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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