CVE-2024-25622
H2O ignores headers configuration directives
Severity Score
3.1
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
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.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2024-02-08 CVE Reserved
- 2024-10-11 CVE Published
- 2024-10-11 CVE Updated
- 2024-11-13 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-670: Always-Incorrect Control Flow Implementation
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://github.com/h2o/h2o/commit/123f5e2b65dcdba8f7ef659a00d24bd1249141be | X_refsource_misc | |
| https://github.com/h2o/h2o/issues/3332 | X_refsource_misc | |
| https://github.com/h2o/h2o/security/advisories/GHSA-5m7v-cj65-h6pj | X_refsource_confirm |
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