JVN#38170084
HAProxy vulnerable to HTTP request/response smuggling
Overview
HAProxy contains a HTTP request/response smuggling vulnerability.
Products Affected
- HAProxy version 2.7.0
- HAProxy version 2.6.1 to 2.6.7
Description
HAProxy's HTTP/3 implementation fails to block a malformed HTTP header field name, and when deployed in front of a server that incorrectly process this malformed header, it may be used to conduct an HTTP request/response smuggling attack (CWE-444).
Impact
A remote attacker may alter a legitimate user's request. As a result, the attacker may obtain sensitive information or cause a denial-of-service (DoS) condition.
Solution
Update the Software
Update the Software to the latest version according to the information provided by the developer.
The developer addressed the vulnerability in the following versions:
- HAProxy version 2.7.1
- HAProxy version 2.6.8
Vendor Status
| Vendor | Link |
| HAProxy Technologies | HAProxy - The Reliable, High Perf. TCP/HTTP Load Balancer |
| Repositories - haproxy-2.7.git/commit |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) |
|---|---|---|---|
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) |
Credit
Yuki Mogi of FFRI Security, Inc. reported this vulnerability to the developer and coordinated. The developer and JPCERT/CC published this advisory in order to notify users of this vulnerability.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2023-25950 |
| JVN iPedia |
JVNDB-2023-000030 |