Envoy up to 1.9.0 Access Control Policy access control

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.
7.8	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Envoy up to 1.9.0. The affected element is an unknown function of the component Access Control Policy. Executing a manipulation with the input something/../admin can lead to access control. The identification of this vulnerability is CVE-2019-9901. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Envoy up to 1.9.0. This vulnerability affects an unknown part of the component Access Control Policy. The manipulation with the input value something/../admin leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., something/../admin, to bypass access control, e.g., a block on /admin. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy.

The bug was discovered 03/30/2019. The weakness was shared 04/25/2019 (GitHub Repository). The advisory is available at github.com. This vulnerability was named CVE-2019-9901 since 03/21/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 26 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.

The entry VDB-134073 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Envoy

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.3
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 10.0
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (MITRE): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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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: 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: 🔍

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

03/21/2019 🔍
03/30/2019 +9 days 🔍
04/25/2019 +26 days 🔍
04/26/2019 +1 days 🔍
09/07/2023 +1595 days 🔍

Sourcesinfo

Advisory: 6435
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-9901 (🔍)
GCVE (CVE): GCVE-0-2019-9901
GCVE (VulDB): GCVE-100-134074
See also: 🔍

Entryinfo

Created: 04/26/2019 07:18
Updated: 09/07/2023 09:26
Changes: 04/26/2019 07:18 (56), 06/02/2020 11:47 (2), 09/07/2023 09:21 (4), 09/07/2023 09:26 (12)
Complete: 🔍
Cache ID: 216::103

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