Unauthenticated response-header injection via unsanitized URL parameters
Published Oct 30, 2024 · Updated Nov 4, 2024
CRLF injection in Karl Seguin http.zig commit 76cf5 allows remote attackers to inject or overwrite HTTP response headers. The request parser accepts CRLF sequences embedded in a URL parameter, and applications that pass the resulting parameter to Response.header emit attacker-controlled header lines. The application must place a URL-derived route parameter into a response header; successful exploitation changes response metadata without reported service interruption.
Summary
What happened
CRLF injection in Karl Seguin http.zig commit 76cf5 allows remote attackers to inject or overwrite HTTP response headers. The request parser accepts CRLF sequences embedded in a URL parameter, and applications that pass the resulting parameter to Response.header emit attacker-controlled header lines. The application must place a URL-derived route parameter into a response header; successful exploitation changes response metadata without reported service interruption.
The record
- CVE
- CVE-2023-52066
- Published
- Oct 30, 2024
- Updated
- Nov 4, 2024
- Vendor
- Karl Seguin
- Product
- http.zig
- Classifications
- T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 30, 2024CVE publishedPublication date reported by the CVE source.
- Nov 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=76cf5
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- Upstream CRLF header-injection proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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