CVE-2024-23452: brpc Request Smuggling — Fix

Description

Request smuggling vulnerability in HTTP server in Apache bRPC 0.9.5~1.7.0 on all platforms allows attacker to smuggle request. Vulnerability Cause Description： The http_parser does not comply with the RFC-7230 HTTP 1.1 specification. Attack scenario: If a message is received with both a Transfer-Encoding and a Content-Length header field, such a message might indicate an attempt to perform request smuggling or response splitting. One particular attack scenario is that a bRPC made http server on the backend receiving requests in one persistent connection from frontend server that uses TE to parse request with the logic that 'chunk' is contained in the TE field. in that case an attacker can smuggle a request into the connection to the backend server. Solution: You can choose one solution from below: 1. Upgrade bRPC to version 1.8.0, which fixes this issue. Download link: https://github.com/apache/brpc/releases/tag/1.8.0 2. Apply this patch: https://github.com/apache/brpc/pull/2518

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness Type (CWE)

CWE-444 CWE-444

Affected Products

Vendor	Product	Versions
apache	brpc	0.9.5 — 1.8.0

References

Advisories & Patches

https://github.com/apache/brpc/pull/2518 https://lists.apache.org/thread/kkvdpwyr2s2yt9qvvxfdzon012898vxd https://github.com/apache/brpc/pull/2518 https://lists.apache.org/thread/kkvdpwyr2s2yt9qvvxfdzon012898vxd

Other References

http://www.openwall.com/lists/oss-security/2024/02/08/1 https://github.com/apache/brpc/releases/tag/1.8.0 http://www.openwall.com/lists/oss-security/2024/02/08/1 https://github.com/apache/brpc/releases/tag/1.8.0

Frequently Asked Questions

What is CVE-2024-23452? +

Request smuggling vulnerability in HTTP server in Apache bRPC 0.9.5~1.7.0 on all platforms allows attacker to smuggle request. Vulnerability Cause Description： The http_parser does not comply with the RFC-7230 HTTP 1.1 specification. Attack scenario: If a message is received with both a Transfer-Encoding and a Content-Length header field, such a message might indicate an attempt to perform request smuggling or response splitting. One particular attack scenario is that a bRPC made http server on the backend receiving requests in one persistent connection from frontend server that uses TE to parse request with the logic that 'chunk' is contained in the TE field. in that case an attacker can smuggle a request into the connection to the backend server. Solution: You can choose one solution from below: 1. Upgrade bRPC to version 1.8.0, which fixes this issue. Download link: https://github.com/apache/brpc/releases/tag/1.8.0 2. Apply this patch: https://github.com/apache/brpc/pull/2518 It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-23452? +

CVE-2024-23452 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-23452? +

CVE-2024-23452 affects products from apache, specifically: brpc. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-23452? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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