CVE-2023-30847

H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP servers. Pull request number 3229 fixes the issue. The pull request has been merged to the `master` branch in commit f010336. Users should upgrade to commit f010336 or later.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/h2o/h2o/commit/f010336bab162839df43d9e87570897466c97e33	Patch
https://github.com/h2o/h2o/pull/3229	Vendor Advisory
https://github.com/h2o/h2o/security/advisories/GHSA-p5hj-phwj-hrvx	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:dena:h2o::::::::
	cpe:2.3:a:dena:h2o:2.3.0:beta1::::::
	cpe:2.3:a:dena:h2o:2.3.0:beta2::::::

History

09 May 2023, 18:21

Type	Values Removed	Values Added
References	~~(MISC) https://github.com/h2o/h2o/commit/f010336bab162839df43d9e87570897466c97e33 -~~	(MISC) https://github.com/h2o/h2o/commit/f010336bab162839df43d9e87570897466c97e33 - Patch
References	~~(MISC) https://github.com/h2o/h2o/security/advisories/GHSA-p5hj-phwj-hrvx -~~	(MISC) https://github.com/h2o/h2o/security/advisories/GHSA-p5hj-phwj-hrvx - Patch, Vendor Advisory
References	~~(MISC) https://github.com/h2o/h2o/pull/3229 -~~	(MISC) https://github.com/h2o/h2o/pull/3229 - Vendor Advisory
First Time		Dena Dena h2o
CPE		cpe:2.3:a:dena:h2o:::::::: cpe:2.3:a:dena:h2o:2.3.0:beta1:::::: cpe:2.3:a:dena:h2o:2.3.0:beta2::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.2

27 Apr 2023, 15:58

Type	Values Removed	Values Added
New CVE

Information

Published : 2023-04-27 15:15

Updated : 2023-12-10 15:01

NVD link : CVE-2023-30847

Mitre link : CVE-2023-30847

CVE.ORG link : CVE-2023-30847

JSON object : View

Products Affected

dena

h2o

CWE

CWE-824

Access of Uninitialized Pointer

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