Undertow HTTP HTTP Response Cache Poisoning request smuggling

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 critical, has been found in Undertow. This issue affects some unknown processing of the component HTTP Handler. The manipulation as part of HTTP Response leads to request smuggling (Cache Poisoning). This vulnerability is documented as CVE-2017-2666. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Undertow (affected version unknown). It has been rated as critical. This issue affects an unknown functionality of the component HTTP Handler. The manipulation as part of a HTTP Response leads to a request smuggling vulnerability (Cache Poisoning). Using CWE to declare the problem leads to CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

It was discovered in Undertow that the code that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own.

The bug was discovered 06/10/2018. The weakness was released 07/27/2018 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2017-2666 since 11/30/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 105252 (RHEL 6 / 7 : eap7-jboss-ec2-eap (RHSA-2017:3458)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236403 (Red Hat Update for eap7-jboss-ec2-eap (RHSA-2017:1412)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (105252) and SecurityFocus (BID 98966†). Entries connected to this vulnerability are available at VDB-92173, VDB-92175, VDB-92322 and VDB-95800. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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License

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: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Cache Poisoning
Class: Request smuggling / Cache Poisoning
CWE: CWE-444
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: 105252
Nessus Name: RHEL 6 / 7 : eap7-jboss-ec2-eap (RHSA-2017:3458)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703906
OpenVAS Name: Debian Security Advisory DSA 3906-1 (undertow - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/30/2016 🔍
06/07/2017 +188 days 🔍
12/12/2017 +188 days 🔍
12/14/2017 +1 days 🔍
06/10/2018 +178 days 🔍
07/27/2018 +46 days 🔍
07/27/2018 +0 days 🔍
07/28/2018 +1 days 🔍
04/27/2023 +1734 days 🔍

Sourcesinfo

Advisory: RHSA-2017:3458
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-2666 (🔍)
GCVE (CVE): GCVE-0-2017-2666
GCVE (VulDB): GCVE-100-122291

OVAL: 🔍

SecurityFocus: 98966 - Red Hat Undertow CVE-2017-2666 Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 07/28/2018 07:42
Updated: 04/27/2023 14:12
Changes: 07/28/2018 07:42 (75), 03/11/2020 07:36 (4), 04/27/2023 14:05 (4), 04/27/2023 14:07 (12), 04/27/2023 14:12 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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