net-http on Go Header Host response splitting

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in net-http on Go. The affected element is an unknown function of the component Header Handler. Performing a manipulation of the argument Host results in response splitting. This vulnerability is known as CVE-2023-29406. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in net-http on Go (affected version unknown). It has been classified as problematic. This affects an unknown functionality of the component Header Handler. The manipulation of the argument Host with an unknown input leads to a response splitting vulnerability. CWE is classifying the issue as CWE-113. The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers. This is going to have an impact on integrity. The summary by CVE is:

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.

The weakness was published 07/12/2023. The advisory is shared at go.dev. This vulnerability is uniquely identified as CVE-2023-29406 since 04/05/2023. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 208702 (Ubuntu 22.04 LTS : Go vulnerabilities (USN-7061-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (208702) and CERT Bund (WID-SEC-2023-1729). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Gentoo Linux
  • Golang Go
  • RESF Rocky Linux
  • Splunk Splunk Enterprise
  • IBM Spectrum Protect Plus

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Response splitting
CWE: CWE-113 / CWE-93 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 208702
Nessus Name: Ubuntu 22.04 LTS : Go vulnerabilities (USN-7061-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/05/2023 🔍
07/12/2023 +98 days 🔍
07/12/2023 +0 days 🔍
11/30/2025 +872 days 🔍

Sourcesinfo

Advisory: go.dev
Status: Confirmed

CVE: CVE-2023-29406 (🔍)
GCVE (CVE): GCVE-0-2023-29406
GCVE (VulDB): GCVE-100-233745
CERT Bund: WID-SEC-2023-1729 - Golang Go: Schwachstelle ermöglicht Manipulation von Daten

Entryinfo

Created: 07/12/2023 05:06
Updated: 11/30/2025 14:18
Changes: 07/12/2023 05:06 (37), 07/30/2023 14:06 (11), 10/11/2024 00:53 (17), 11/30/2025 14:18 (7)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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