Undici 5.7.1/5.8.0/5.8.1/5.8.2 HTTP Header crlf injection

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Undici. This affects an unknown part of the component HTTP Header Handler. The manipulation results in crlf injection. This vulnerability is reported as CVE-2023-23936. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Undici. Affected is an unknown part of the component HTTP Header Handler. The manipulation with an unknown input leads to a crlf injection vulnerability. CWE is classifying the issue as CWE-93. The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Undici is an HTTP/1.1 client for Node.js. Starting with version 2.0.0 and prior to version 5.19.1, the undici library does not protect `host` HTTP header from CRLF injection vulnerabilities. This issue is patched in Undici v5.19.1. As a workaround, sanitize the `headers.host` string before passing to undici.

The weakness was disclosed 02/17/2023 as GHSA-5r9g-qh6m-jxff. The advisory is available at github.com. This vulnerability is traded as CVE-2023-23936 since 01/19/2023. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 216256 (Oracle Linux 8 : nodejs:20 (ELSA-2025-1351)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.19.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch a2eff05401358f6595138df963837c24348f2034 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (216256) and CERT Bund (WID-SEC-2023-0414). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • IBM DB2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • SUSE Linux
  • Oracle Linux
  • IBM Spectrum Protect
  • Open Source Node.js
  • IBM DataPower Gateway
  • RESF Rocky Linux

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Crlf injection
CWE: CWE-93 / CWE-74 / CWE-707
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: 216256
Nessus Name: Oracle Linux 8 : nodejs:20 (ELSA-2025-1351)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Undici 5.19.1
Patch: a2eff05401358f6595138df963837c24348f2034

Timelineinfo

01/19/2023 🔍
02/17/2023 +29 days 🔍
02/17/2023 +0 days 🔍
12/03/2025 +1020 days 🔍

Sourcesinfo

Advisory: GHSA-5r9g-qh6m-jxff
Status: Confirmed

CVE: CVE-2023-23936 (🔍)
GCVE (CVE): GCVE-0-2023-23936
GCVE (VulDB): GCVE-100-221322
CERT Bund: WID-SEC-2023-0414 - Node.js: Mehrere Schwachstellen

Entryinfo

Created: 02/17/2023 08:58
Updated: 12/03/2025 18:43
Changes: 02/17/2023 08:58 (51), 03/18/2023 10:02 (11), 02/14/2025 13:49 (18), 12/03/2025 18:43 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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