// For flags

CVE-2023-29406

Insufficient sanitization of Host header in net/http

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host or Request.URL.Host value.

A flaw was found in Golang, where it is vulnerable to HTTP header injection caused by improper content validation of the Host header by the HTTP/1 client. A remote attacker can inject arbitrary HTTP headers by persuading a victim to visit a specially crafted Web page. This flaw allows the attacker to conduct various attacks against the vulnerable system, including Cross-site scripting, cache poisoning, or session hijacking.

*Credits: Bartek Nowotarski
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-04-05 CVE Reserved
  • 2023-07-11 CVE Published
  • 2024-08-02 CVE Updated
  • 2024-08-12 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
  • CWE-436: Interpretation Conflict
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Golang
Search vendor "Golang"
Go
Search vendor "Golang" for product "Go"
< 1.19.11
Search vendor "Golang" for product "Go" and version " < 1.19.11"
-
Affected
Golang
Search vendor "Golang"
Go
Search vendor "Golang" for product "Go"
>= 1.20.0 < 1.20.6
Search vendor "Golang" for product "Go" and version " >= 1.20.0 < 1.20.6"
-
Affected