H2O up to 2.2.3 range error

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 (≈)
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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.
5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in H2O up to 2.2.3 and classified as problematic. The affected element is an unknown function. Such manipulation leads to range error. This vulnerability is documented as CVE-2017-10872. The attack can be executed remotely. There is not any exploit available. Restrictive firewalling should be applied.

Detailsinfo

A vulnerability was found in H2O up to 2.2.3. It has been rated as problematic. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a range error vulnerability. Using CWE to declare the problem leads to CWE-118. The product does not restrict or incorrectly restricts operations within the boundaries of a resource that is accessed using an index or pointer, such as memory or files. Impacted is availability. CVE summarizes:

H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via unspecified vectors.

The bug was discovered 12/18/2017. The weakness was released 12/22/2017 (Website). The advisory is shared for download at jvn.jp. This vulnerability is handled as CVE-2017-10872 since 07/04/2017. The exploitation is known to be easy. The attack may be launched remotely. A simple authentication is needed for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k.

Addressing this vulnerability is possible by firewalling .

Entries connected to this vulnerability are available at VDB-110994, VDB-110995 and VDB-110998. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Range error
CWE: CWE-118
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 864859
OpenVAS Name: H2O HTTP Server Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/04/2017 🔍
12/18/2017 +167 days 🔍
12/22/2017 +4 days 🔍
12/22/2017 +0 days 🔍
12/23/2017 +1 days 🔍
01/18/2023 +1852 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1543
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-10872 (🔍)
GCVE (CVE): GCVE-0-2017-10872
GCVE (VulDB): GCVE-100-110996
See also: 🔍

Entryinfo

Created: 12/23/2017 09:40
Updated: 01/18/2023 19:06
Changes: 12/23/2017 09:40 (61), 12/17/2019 13:47 (1), 01/18/2023 19:06 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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