CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
CVE-2021-32565 (GCVE-0-2021-32565)
Vulnerability from cvelistv5 – Published: 2021-06-29 11:45 – Updated: 2024-08-03 23:25
VLAI
Title
HTTP Request Smuggling, content length with invalid charters
Summary
Invalid values in the Content-Length header sent to Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.
Severity
No CVSS data available.
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread.html/ra1a41ff92a7… | x_refsource_MISC |
| https://www.debian.org/security/2021/dsa-4957 | vendor-advisoryx_refsource_DEBIAN |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Traffic Server |
Affected:
Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1
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CVE-2021-32715 (GCVE-0-2021-32715)
Vulnerability from cvelistv5 – Published: 2021-07-07 20:05 – Updated: 2024-08-03 23:25
VLAI
Title
Lenient Parsing of Content-Length Header When Prefixed with Plus Sign
Summary
hyper is an HTTP library for rust. hyper's HTTP/1 server code had a flaw that incorrectly parses and accepts requests with a `Content-Length` header with a prefixed plus sign, when it should have been rejected as illegal. This combined with an upstream HTTP proxy that doesn't parse such `Content-Length` headers, but forwards them, can result in "request smuggling" or "desync attacks". The flaw exists in all prior versions of hyper prior to 0.14.10, if built with `rustc` v1.5.0 or newer. The vulnerability is patched in hyper version 0.14.10. Two workarounds exist: One may reject requests manually that contain a plus sign prefix in the `Content-Length` header or ensure any upstream proxy handles `Content-Length` headers with a plus sign prefix.
Severity
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/hyperium/hyper/security/adviso… | x_refsource_CONFIRM |
| https://github.com/rust-lang/rust/pull/28826/comm… | x_refsource_MISC |
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CVE-2021-33037 (GCVE-0-2021-33037)
Vulnerability from cvelistv5 – Published: 2021-07-12 14:55 – Updated: 2024-08-03 23:42
VLAI
Title
Incorrect Transfer-Encoding handling with HTTP/1.0
Summary
Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.
Severity
No CVSS data available.
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
16 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
Apache Tomcat 10 10.0.0-M1 to 10.0.6
Affected: Apache Tomcat 9 9.0.0.M1 to 9.0.46 Affected: Apache Tomcat 8 8.5.0 to 8.5.66 |
Credits
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CVE-2021-33683 (GCVE-0-2021-33683)
Vulnerability from cvelistv5 – Published: 2021-07-14 11:04 – Updated: 2024-08-03 23:58
VLAI
Summary
SAP Web Dispatcher and Internet Communication Manager (ICM), versions - KRNL32NUC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL32UC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL64NUC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, KRNL64UC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, 7.53, 7.73, WEBDISP 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, KERNEL 7.21, 7.22, 7.49, 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, process invalid HTTP header. The incorrect handling of the invalid Transfer-Encoding header in a particular manner leads to a possibility of HTTP Request Smuggling attack. An attacker could exploit this vulnerability to bypass web application firewall protection, divert sensitive data such as customer requests, session credentials, etc.
Severity
5.4 (Medium)
CWE
- CWE-444 - (HTTP Request Smuggling)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://wiki.scn.sap.com/wiki/pages/viewpage.acti… | x_refsource_MISC |
| https://launchpad.support.sap.com/#/notes/3000663 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP SE | SAP Web Dispatcher and Internet Communication Manager |
Affected:
< KRNL32NUC 7.21
Affected: < 7.21EXT Affected: < 7.22 Affected: < 7.22EXT Affected: < KRNL32UC 7.21 Affected: < KRNL64NUC 7.21 Affected: < 7.49 Affected: < KRNL64UC 7.21 Affected: < 7.53 Affected: < 7.73 Affected: < WEBDISP 7.53 Affected: < 7.77 Affected: < 7.81 Affected: < 7.82 Affected: < 7.83 Affected: < KERNEL 7.21 |
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CVE-2021-34559 (GCVE-0-2021-34559)
Vulnerability from cvelistv5 – Published: 2021-08-31 10:32 – Updated: 2024-09-16 17:33
VLAI
Title
A vulnerability in WirelessHART-Gateway <= 3.0.8 may allow remote attackers to rewrite links and URLs in cached pages to arbitrary strings
Summary
In PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.8 a vulnerability may allow remote attackers to rewrite links and URLs in cached pages to arbitrary strings.
Severity
5.4 (Medium)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert.vde.com/en-us/advisories/vde-2021-027 | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Phoenix Contact | WHA-GW-F2D2-0-AS- Z2-ETH |
Affected:
3.0.8 , ≤ 3.0.8
(custom)
|
|
| Phoenix Contact | WHA-GW-F2D2-0-AS- Z2-ETH.EIP |
Affected:
3.0.8 , ≤ 3.0.8
(custom)
|
Date Public
2021-08-16 00:00
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CVE-2021-37147 (GCVE-0-2021-37147)
Vulnerability from cvelistv5 – Published: 2021-11-03 15:20 – Updated: 2024-08-04 01:16
VLAI
Title
Request Smuggling - LF line ending
Summary
Improper input validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 8.1.2 and 9.0.0 to 9.1.0.
Severity
No CVSS data available.
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/k01797hyncx53659w… | x_refsource_MISC |
| https://www.debian.org/security/2022/dsa-5153 | vendor-advisoryx_refsource_DEBIAN |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Traffic Server |
Affected:
8.0.0 to 8.1.2 and 9.0.0 to 9.1.0
|
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CVE-2021-38162 (GCVE-0-2021-38162)
Vulnerability from cvelistv5 – Published: 2021-09-14 11:15 – Updated: 2024-08-04 01:37
VLAI
Summary
SAP Web Dispatcher versions - 7.49, 7.53, 7.77, 7.81, KRNL64NUC - 7.22, 7.22EXT, 7.49, KRNL64UC -7.22, 7.22EXT, 7.49, 7.53, KERNEL - 7.22, 7.49, 7.53, 7.77, 7.81, 7.83 processes allow an unauthenticated attacker to submit a malicious crafted request over a network to a front-end server which may, over several attempts, result in a back-end server confusing the boundaries of malicious and legitimate messages. This can result in the back-end server executing a malicious payload which can be used to read or modify any information on the server or consume server resources making it temporarily unavailable.
Severity
8.9 (High)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://wiki.scn.sap.com/wiki/pages/viewpage.acti… | x_refsource_MISC |
| https://launchpad.support.sap.com/#/notes/3080567 | x_refsource_MISC |
| http://seclists.org/fulldisclosure/2022/May/3 | mailing-listx_refsource_FULLDISC |
| http://packetstormsecurity.com/files/166964/SAP-W… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP SE | SAP Web Dispatcher |
Affected:
WEBDISP - 7.49
Affected: 7.53 Affected: 7.77 Affected: 7.81 Affected: KRNL64NUC - 7.22 Affected: 7.22EXT Affected: 7.49 Affected: KRNL64UC -7.22 Affected: KERNEL - 7.22 Affected: 7.83 |
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CVE-2021-39214 (GCVE-0-2021-39214)
Vulnerability from cvelistv5 – Published: 2021-09-16 15:10 – Updated: 2024-08-04 01:58
VLAI
Title
Lacking Protection against HTTP Request Smuggling in mitmproxy
Summary
mitmproxy is an interactive, SSL/TLS-capable intercepting proxy. In mitmproxy 7.0.2 and below, a malicious client or server is able to perform HTTP request smuggling attacks through mitmproxy. This means that a malicious client/server could smuggle a request/response through mitmproxy as part of another request/response's HTTP message body. While a smuggled request is still captured as part of another request's body, it does not appear in the request list and does not go through the usual mitmproxy event hooks, where users may have implemented custom access control checks or input sanitization. Unless one uses mitmproxy to protect an HTTP/1 service, no action is required. The vulnerability has been fixed in mitmproxy 7.0.3 and above.
Severity
8.1 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/mitmproxy/mitmproxy/security/a… | x_refsource_CONFIRM |
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CVE-2021-41136 (GCVE-0-2021-41136)
Vulnerability from cvelistv5 – Published: 2021-10-12 15:30 – Updated: 2025-05-27 15:16
VLAI
Title
Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') in puma
Summary
Puma is a HTTP 1.1 server for Ruby/Rack applications. Prior to versions 5.5.1 and 4.3.9, using `puma` with a proxy which forwards HTTP header values which contain the LF character could allow HTTP request smugggling. A client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. The only proxy which has this behavior, as far as the Puma team is aware of, is Apache Traffic Server. 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. This vulnerability was patched in Puma 5.5.1 and 4.3.9. As a workaround, do not use Apache Traffic Server with `puma`.
Severity
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/puma/puma/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/puma/puma/commit/436c71807f00e… | x_refsource_MISC |
| https://github.com/puma/puma/commit/acdc3ae571dfa… | x_refsource_MISC |
| https://github.com/puma/puma/commit/fb6ad8f8013ab… | x_refsource_MISC |
| https://www.debian.org/security/2022/dsa-5146 | vendor-advisoryx_refsource_DEBIANx_transferred |
| https://security.gentoo.org/glsa/202208-28 | vendor-advisoryx_refsource_GENTOOx_transferred |
| https://lists.debian.org/debian-lts-announce/2022… | mailing-listx_refsource_MLISTx_transferred |
Impacted products
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CVE-2021-41267 (GCVE-0-2021-41267)
Vulnerability from cvelistv5 – Published: 2021-11-24 18:55 – Updated: 2024-08-04 03:08
VLAI
Title
Webcache Poisoning in Symfony
Summary
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.
Severity
6.5 (Medium)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/symfony/symfony/pull/44243 | x_refsource_MISC |
| https://github.com/symfony/symfony/releases/tag/v5.3.12 | x_refsource_MISC |
| https://github.com/symfony/symfony/security/advis… | x_refsource_CONFIRM |
| https://github.com/symfony/symfony/commit/95dcf51… | x_refsource_MISC |
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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"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-444: Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/symfony/symfony/pull/44243",
"refsource": "MISC",
"url": "https://github.com/symfony/symfony/pull/44243"
},
{
"name": "https://github.com/symfony/symfony/releases/tag/v5.3.12",
"refsource": "MISC",
"url": "https://github.com/symfony/symfony/releases/tag/v5.3.12"
},
{
"name": "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q",
"refsource": "CONFIRM",
"url": "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q"
},
{
"name": "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487",
"refsource": "MISC",
"url": "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487"
}
]
},
"source": {
"advisory": "GHSA-q3j3-w37x-hq2q",
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2021-41267",
"datePublished": "2021-11-24T18:55:17.000Z",
"dateReserved": "2021-09-15T00:00:00.000Z",
"dateUpdated": "2024-08-04T03:08:31.656Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Mitigation
Phase: Implementation
Description:
- Use a web server that employs a strict HTTP parsing procedure, such as Apache [REF-433].
Mitigation
Phase: Implementation
Description:
- Use only SSL communication.
Mitigation
Phase: Implementation
Description:
- Terminate the client session after each request.
Mitigation
Phase: System Configuration
Description:
- Turn all pages to non-cacheable.
CAPEC-273: HTTP Response Smuggling
['An adversary manipulates and injects malicious content in the form of secret unauthorized HTTP responses, into a single HTTP response from a vulnerable or compromised back-end HTTP agent (e.g., server).', 'See CanPrecede relationships for possible consequences.']
CAPEC-33: HTTP Request Smuggling
['An adversary abuses the flexibility and discrepancies in the parsing and interpretation of HTTP Request messages using various HTTP headers, request-line and body parameters as well as message sizes (denoted by the end of message signaled by a given HTTP header) by different intermediary HTTP agents (e.g., load balancer, reverse proxy, web caching proxies, application firewalls, etc.) to secretly send unauthorized and malicious HTTP requests to a back-end HTTP agent (e.g., web server).', 'See CanPrecede relationships for possible consequences.']