4.3
MEDIUM
CVE-2024-25622
h2o HTTP Server Header Inheritance Vulnerability
Description

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The configuration directives provided by the headers handler allows users to modify the response headers being sent by h2o. The configuration file of h2o has scopes, and the inner scopes (e.g., path level) are expected to inherit the configuration defined in outer scopes (e.g., global level). However, if a header directive is used in the inner scope, all the definition in outer scopes are ignored. This can lead to headers not being modified as expected. Depending on the headers being added or removed unexpectedly, this behavior could lead to unexpected client behavior. This vulnerability is fixed in commit 123f5e2b65dcdba8f7ef659a00d24bd1249141be.

INFO

Published Date :

Oct. 11, 2024, 3:15 p.m.

Last Modified :

Nov. 12, 2024, 8:04 p.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2024-25622 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Dena h2o
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2024-25622.

URL Resource
https://github.com/h2o/h2o/commit/123f5e2b65dcdba8f7ef659a00d24bd1249141be Patch
https://github.com/h2o/h2o/issues/3332 Issue Tracking
https://github.com/h2o/h2o/security/advisories/GHSA-5m7v-cj65-h6pj Exploit Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-25622 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-25622 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Nov. 12, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
    Changed Reference Type https://github.com/h2o/h2o/commit/123f5e2b65dcdba8f7ef659a00d24bd1249141be No Types Assigned https://github.com/h2o/h2o/commit/123f5e2b65dcdba8f7ef659a00d24bd1249141be Patch
    Changed Reference Type https://github.com/h2o/h2o/issues/3332 No Types Assigned https://github.com/h2o/h2o/issues/3332 Issue Tracking
    Changed Reference Type https://github.com/h2o/h2o/security/advisories/GHSA-5m7v-cj65-h6pj No Types Assigned https://github.com/h2o/h2o/security/advisories/GHSA-5m7v-cj65-h6pj Exploit, Vendor Advisory
    Added CWE NIST CWE-670
    Added CPE Configuration OR *cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:* versions up to (including) 2024-02-11
  • CVE Received by [email protected]

    Oct. 11, 2024

    Action Type Old Value New Value
    Added Description h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The configuration directives provided by the headers handler allows users to modify the response headers being sent by h2o. The configuration file of h2o has scopes, and the inner scopes (e.g., path level) are expected to inherit the configuration defined in outer scopes (e.g., global level). However, if a header directive is used in the inner scope, all the definition in outer scopes are ignored. This can lead to headers not being modified as expected. Depending on the headers being added or removed unexpectedly, this behavior could lead to unexpected client behavior. This vulnerability is fixed in commit 123f5e2b65dcdba8f7ef659a00d24bd1249141be.
    Added Reference GitHub, Inc. https://github.com/h2o/h2o/security/advisories/GHSA-5m7v-cj65-h6pj [No types assigned]
    Added Reference GitHub, Inc. https://github.com/h2o/h2o/issues/3332 [No types assigned]
    Added Reference GitHub, Inc. https://github.com/h2o/h2o/commit/123f5e2b65dcdba8f7ef659a00d24bd1249141be [No types assigned]
    Added CWE GitHub, Inc. CWE-670
    Added CVSS V3.1 GitHub, Inc. AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-25622 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-25622 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability