H2O up to 2.2.2 HTTP1 Header input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in H2O up to 2.2.2. This issue affects some unknown processing of the component HTTP1 Header Handler. The manipulation results in input validation. This vulnerability is cataloged as CVE-2017-10868. The attack may be launched remotely. There is no exploit available. Applying restrictive firewalling is recommended.

Detailsinfo

A vulnerability was found in H2O up to 2.2.2. It has been classified as problematic. Affected is some unknown functionality of the component HTTP1 Header Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

H2O version 2.2.2 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/1 header.

The bug was discovered 12/18/2017. The weakness was shared 12/22/2017 (Website). The advisory is available at jvn.jp. This vulnerability is traded as CVE-2017-10868 since 07/04/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 104061 (FreeBSD : h2o -- DoS in workers (10c0fabc-b5da-11e7-816e-00bd5d1fff09)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

It is possible to mitigate the weakness by firewalling . A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104061). The entries VDB-110995, VDB-110996 and VDB-110998 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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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Nessus ID: 104061
Nessus Name: FreeBSD : h2o -- DoS in workers (10c0fabc-b5da-11e7-816e-00bd5d1fff09)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 860550
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 🔍
10/17/2017 +105 days 🔍
10/23/2017 +6 days 🔍
12/18/2017 +56 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: 1459
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-10868 (🔍)
GCVE (CVE): GCVE-0-2017-10868
GCVE (VulDB): GCVE-100-110994
See also: 🔍

Entryinfo

Created: 12/23/2017 09:39
Updated: 01/18/2023 18:50
Changes: 12/23/2017 09:39 (68), 12/17/2019 14:00 (2), 01/18/2023 18:50 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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