Vaadin up to 14.4.2/17.x com.vaadin:flow-server path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Vaadin up to 14.4.2/17.x and classified as critical. The affected element is an unknown function of the component com.vaadin:flow-server. Such manipulation leads to path traversal. This vulnerability is listed as CVE-2020-36321. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Vaadin up to 14.4.2/17.x. Affected by this issue is an unknown code of the component com.vaadin:flow-server. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product 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 product 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. Impacted is confidentiality, and integrity.

The weakness was presented 04/24/2021. The advisory is shared for download at vaadin.com. This vulnerability is handled as CVE-2020-36321. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 18.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Vaadin 18.0
Patch: github.com

Timelineinfo

04/13/2021 🔍
04/24/2021 +11 days 🔍
04/24/2021 +0 days 🔍
04/29/2021 +5 days 🔍

Sourcesinfo

Advisory: vaadin.com
Status: Confirmed

CVE: CVE-2020-36321 (🔍)
GCVE (CVE): GCVE-0-2020-36321
GCVE (VulDB): GCVE-100-173828

Entryinfo

Created: 04/24/2021 09:13
Updated: 04/29/2021 10:09
Changes: 04/24/2021 09:13 (38), 04/29/2021 10:05 (5), 04/29/2021 10:09 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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