VDB-221323 · CVE-2023-24807 · GHSA-r6ch-mqf9-qc9w

Undici up to 5.19.0 redos

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Undici up to 5.19.0. This vulnerability affects unknown code. This manipulation causes redos. This vulnerability appears as CVE-2023-24807. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Undici up to 5.19.0 and classified as problematic. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a redos vulnerability. The CWE definition for the vulnerability is CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. As an impact it is known to affect availability. The summary by CVE is:

Undici is an HTTP/1.1 client for Node.js. Prior to version 5.19.1, the `Headers.set()` and `Headers.append()` methods are vulnerable to Regular Expression Denial of Service (ReDoS) attacks when untrusted values are passed into the functions. This is due to the inefficient regular expression used to normalize the values in the `headerValueNormalize()` utility function. This vulnerability was patched in v5.19.1. No known workarounds are available.

The weakness was presented 02/17/2023 as GHSA-r6ch-mqf9-qc9w. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-24807 since 01/30/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1449.003 according to MITRE ATT&CK.

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 f2324e549943f0b0937b09fb1c0c16cc7c93abdf 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). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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

Undici

Version

License

open-source

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: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

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: f2324e549943f0b0937b09fb1c0c16cc7c93abdf

Timelineinfo

01/30/2023 🔍
02/17/2023 +18 days 🔍
02/17/2023 +0 days 🔍
12/03/2025 +1020 days 🔍

Sourcesinfo

Advisory: GHSA-r6ch-mqf9-qc9w
Status: Confirmed

CVE: CVE-2023-24807 (🔍)
GCVE (CVE): GCVE-0-2023-24807
GCVE (VulDB): GCVE-100-221323
CERT Bund: WID-SEC-2023-0414 - Node.js: Mehrere Schwachstellen

Entryinfo

Created: 02/17/2023 08:58
Updated: 12/03/2025 18:50
Changes: 02/17/2023 08:58 (51), 02/14/2025 13:49 (17), 12/03/2025 18:50 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.