Olivier Poitrey Go CORS Handler up to 1.3.0 Policy Converter Wildcard origin validation

HistoryDiffrelatejsonxmlCTI

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.
5.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Olivier Poitrey Go CORS Handler up to 1.3.0 and classified as critical. Affected by this issue is some unknown functionality of the component Policy Converter. Such manipulation as part of Wildcard leads to origin validation. This vulnerability is traded as CVE-2018-20744. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Olivier Poitrey Go CORS Handler up to 1.3.0. It has been rated as critical. Affected by this issue is an unknown code of the component Policy Converter. The manipulation as part of a Wildcard leads to a origin validation vulnerability. Using CWE to declare the problem leads to CWE-346. The product does not properly verify that the source of data or communication is valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The Olivier Poitrey Go CORS handler through 1.3.0 actively converts a wildcard CORS policy into reflecting an arbitrary Origin header value, which is incompatible with the CORS security design, and could lead to CORS misconfiguration security problems.

The bug was discovered 05/12/2018. The weakness was shared 01/28/2019 (Website). The advisory is available at github.com. This vulnerability is handled as CVE-2018-20744 since 01/28/2019. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 261 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.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Olivier Poitrey

Name

Go CORS Handler

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

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

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Origin validation
CWE: CWE-346 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/12/2018 🔍
01/28/2019 +261 days 🔍
01/28/2019 +0 days 🔍
01/28/2019 +0 days 🔍
01/28/2019 +0 days 🔍
07/03/2023 +1617 days 🔍

Sourcesinfo

Advisory: 55
Status: Not defined

CVE: CVE-2018-20744 (🔍)
GCVE (CVE): GCVE-0-2018-20744
GCVE (VulDB): GCVE-100-130274
SecurityFocus: 106834

Entryinfo

Created: 01/28/2019 16:24
Updated: 07/03/2023 14:53
Changes: 01/28/2019 16:24 (57), 05/06/2020 11:56 (1), 07/03/2023 14:53 (4)
Complete: 🔍
Cache ID: 216::103