Envoy up to 1.15.4/1.16.3/1.17.2/1.18.1/1.18.2 path traversal

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
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5.4$0-$5k0.00

A vulnerability was found in Envoy up to 1.15.4/1.16.3/1.17.2/1.18.1/1.18.2. It has been classified as critical. This affects some unknown functionality. The manipulation with an unknown input leads to a directory traversal vulnerability. CWE is classifying the issue as CWE-22. The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. The impact remains unknown.

The weakness was presented 05/29/2021. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2021-29492. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 1.15.5, 1.16.4, 1.17.3, 1.18.2 or 1.18.3 eliminates this vulnerability.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Directory traversal
CWE: CWE-22
ATT&CK: T1006

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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: Envoy 1.15.5/1.16.4/1.17.3/1.18.2/1.18.3

Timelineinfo

03/30/2021 🔍
05/29/2021 +60 days 🔍
05/29/2021 +0 days 🔍
06/03/2021 +5 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-29492 (🔍)

Entryinfo

Created: 05/29/2021 08:09 AM
Updated: 06/03/2021 11:32 AM
Changes: (1) source_cve_cna
Complete: 🔍

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