CVE-2023-50247

Published: Dic 12, 2023 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2023-55065 Aliases: GSD-2023-50247
ExploitDB:
Other exploit source:
Google Dorks:
LOW 3,7
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low

Description

AI Translation Available

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The QUIC stack (quicly), as used by H2O up to commit 43f86e5 (in version 2.3.0-beta and prior), is susceptible to a state exhaustion attack. When H2O is serving HTTP/3, a remote attacker can exploit this vulnerability to progressively increase the memory retained by the QUIC stack. This can eventually cause H2O to abort due to memory exhaustion. The vulnerability has been resolved in commit d67e81d03be12a9d53dc8271af6530f40164cd35. HTTP/1 and HTTP/2 are not affected by this vulnerability as they do not use QUIC. Administrators looking to mitigate this issue without upgrading can disable HTTP/3 support.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0056
Percentile
0,7th
Updated

EPSS Score Trend (Last 91 Days)

770

Allocation of Resources Without Limits or Throttling

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
Application

H2O by Dena

Product Information
Vendor Dena
Product H2O
Version 2.3.0
cpe:2.3:a:dena:h2o:2.3.0:beta1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

H2O by Dena

Product Information
Vendor Dena
Product H2O
Version Range Affected
To 2.2.6 (inclusive)
cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

H2O by Dena

Product Information
Vendor Dena
Product H2O
Version 2.3.0
cpe:2.3:a:dena:h2o:2.3.0:beta2:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/h2o/h2o/commit/d67e81d03be12a9d53dc8271a…
Patch
https://github.com/h2o/h2o/commit/d67e81d03be12a9d53dc8271af6530f40164cd35
https://github.com/h2o/h2o/security/advisories/GHSA-2ch5-p5…
Patch Vendor Advisory
https://github.com/h2o/h2o/security/advisories/GHSA-2ch5-p59c-7mv6
https://github.com/h2o/h2o/commit/d67e81d03be12a9d53dc8271a…
Patch
https://github.com/h2o/h2o/commit/d67e81d03be12a9d53dc8271af6530f40164cd35
https://github.com/h2o/h2o/security/advisories/GHSA-2ch5-p5…
Patch Vendor Advisory
https://github.com/h2o/h2o/security/advisories/GHSA-2ch5-p59c-7mv6