rack-cors up to 0.4.0 CORS Request access control

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in rack-cors up to 0.4.0. This impacts an unknown function of the component CORS Request Handler. Performing a manipulation results in access control. This vulnerability is reported as CVE-2017-11173. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in rack-cors up to 0.4.0. It has been classified as critical. This affects some unknown functionality of the component CORS Request Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests. If the configuration were intended to allow only the trusted example.com domain name and not the malicious example.net domain name, then example.com.example.net (as well as example.com-example.net) would be inadvertently allowed.

The bug was discovered 07/12/2017. The weakness was disclosed 07/13/2017 as not defined mailinglist post (Full-Disclosure). The advisory is shared at seclists.org. This vulnerability is uniquely identified as CVE-2017-11173 since 07/11/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 102006 (Fedora 25 : rubygem-rack-cors (2017-c22a8af4e9)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276770 (Fedora Security Update for rubygem-rack-cors (FEDORA-2017-c22a8af4e9)).

Upgrading to version 0.4.1 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (102006). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 8.8
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

Class: Access control
CWE: CWE-284 / CWE-266
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: 102006
Nessus Name: Fedora 25 : rubygem-rack-cors (2017-c22a8af4e9)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for rubygem-rack-cors FEDORA-2017-c22a8af4e9
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: rack-cors 0.4.1
Patch: github.com

Timelineinfo

07/11/2017 🔍
07/12/2017 +1 days 🔍
07/12/2017 +0 days 🔍
07/13/2017 +1 days 🔍
07/13/2017 +0 days 🔍
07/24/2017 +11 days 🔍
07/27/2017 +3 days 🔍
12/12/2022 +1964 days 🔍

Sourcesinfo

Advisory: 143345
Status: Not defined

CVE: CVE-2017-11173 (🔍)
GCVE (CVE): GCVE-0-2017-11173
GCVE (VulDB): GCVE-100-103497

Entryinfo

Created: 07/13/2017 09:53
Updated: 12/12/2022 12:15
Changes: 07/13/2017 09:53 (72), 10/25/2019 17:55 (2), 12/12/2022 12:15 (5)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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