Keycloak SSO up to 1.x Password Reset Link Host Header injection

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 (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
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.
5.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Keycloak SSO up to 1.x. This vulnerability affects unknown code of the component Password Reset Link. This manipulation as part of Host Header causes injection. This vulnerability is handled as CVE-2017-1000500. 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 Keycloak SSO up to 1.x. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Password Reset Link. The manipulation as part of a Host Header leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Keycloak SSO versions prior to 2.x are vulnerable to Host Header Injection on the forgot password page causing the application to send a poisoned URL as the password reset link.

The bug was discovered 12/14/2017. The weakness was released 01/03/2018 (GitHub Repository). The advisory is shared at github.com. This vulnerability is known as CVE-2017-1000500 since 01/03/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 20 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2.0 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.6

VulDB Base Score: 6.3
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: SSO 2.0

Timelineinfo

12/14/2017 🔍
01/03/2018 +20 days 🔍
01/03/2018 +0 days 🔍
01/03/2018 +0 days 🔍
01/04/2018 +1 days 🔍
01/28/2021 +1120 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2017-1000500 (🔍)
GCVE (CVE): GCVE-0-2017-1000500
GCVE (VulDB): GCVE-100-111301

Entryinfo

Created: 01/04/2018 07:38
Updated: 01/28/2021 11:44
Changes: 01/04/2018 07:38 (44), 12/19/2019 14:28 (1), 01/28/2021 11:44 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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