i-filter up to 9.50R05 HTTP Response Splitting response splitting

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.
6.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in i-filter up to 9.50R05. Impacted is an unknown function. The manipulation results in response splitting (HTTP Response Splitting). This vulnerability is reported as CVE-2018-16181. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in i-filter up to 9.50R05. Affected is an unknown functionality. The manipulation with an unknown input leads to a response splitting vulnerability (HTTP Response Splitting). CWE is classifying the issue as CWE-113. The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

HTTP header injection vulnerability in i-FILTER Ver.9.50R05 and earlier may allow remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks that may result in an arbitrary script injection or setting an arbitrary cookie values via unspecified vectors.

The bug was discovered 12/07/2018. The weakness was disclosed 01/09/2019 (Website). The advisory is shared for download at jvn.jp. This vulnerability is traded as CVE-2018-16181 since 08/30/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 33 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entry VDB-128891 is pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
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

Name: HTTP Response Splitting
Class: Response splitting / HTTP Response Splitting
CWE: CWE-113 / CWE-93 / CWE-74
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/30/2018 🔍
12/07/2018 +99 days 🔍
01/09/2019 +33 days 🔍
01/09/2019 +0 days 🔍
01/10/2019 +1 days 🔍
04/27/2020 +473 days 🔍

Sourcesinfo

Advisory: jvn.jp
Status: Not defined

CVE: CVE-2018-16181 (🔍)
GCVE (CVE): GCVE-0-2018-16181
GCVE (VulDB): GCVE-100-128892
See also: 🔍

Entryinfo

Created: 01/10/2019 13:57
Updated: 04/27/2020 16:42
Changes: 01/10/2019 13:57 (56), 04/27/2020 16:42 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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