Multiple vulnerabilities in Rack



Published: 2018-11-20
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-16471
CVE-2018-16470
CWE-ID CWE-79
CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Rack
Web applications / Modules and components for CMS

Vendor Rack

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU15970

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-16471

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient escaping of the content returned by the scheme method in the Rack::Request class. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

The vulnerability has been fixed in the versions 1.6.11, 2.0.6.

Vulnerable software versions

Rack: 0.1 - 2.0.5


CPE2.3 External links

http://groups.google.com/forum/#!topic/rubyonrails-security/GKsAFT924Ag

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Resource exhaustion

EUVDB-ID: #VU15971

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-16470

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to resource exhaustion condition in the multipart parser when processing malicious input. A remote attacker can send a custom request, cause the parser to use an excessive amount of CPU resources and cause the service to crash.

Mitigation

Update to version 2.0.6.

Vulnerable software versions

Rack: 2.0.4 - 2.0.5


CPE2.3 External links

http://groups.google.com/forum/#!msg/rubyonrails-security/U_x-YkfuVTg/xhvYAmp6AAAJ

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



###SIDEBAR###