Nextcloud Server up to 18.0.10/19.0.4/20.0.1 Workflow Rule resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Nextcloud Server up to 18.0.10/19.0.4/20.0.1 and classified as problematic. This vulnerability affects unknown code of the component Workflow Rule Handler. The manipulation results in resource consumption. This vulnerability is reported as CVE-2020-8293. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Nextcloud Server up to 18.0.10/19.0.4/20.0.1 (Cloud Software). Affected is an unknown code of the component Workflow Rule Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability.

The weakness was disclosed 01/27/2021 as NC-SA-2021-001. The advisory is shared for download at hackerone.com. This vulnerability is traded as CVE-2020-8293. There are neither technical details nor an exploit publicly available.

Upgrading to version 18.0.11, 19.0.5 or 20.0.2 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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: Resource consumption
CWE: CWE-400 / CWE-404
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: Nextcloud Server 18.0.11/19.0.5/20.0.2

Timelineinfo

01/28/2020 🔍
01/27/2021 +365 days 🔍
01/27/2021 +0 days 🔍
02/20/2021 +24 days 🔍

Sourcesinfo

Advisory: NC-SA-2021-001
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-8293 (🔍)
GCVE (CVE): GCVE-0-2020-8293
GCVE (VulDB): GCVE-100-168732

Entryinfo

Created: 01/27/2021 10:05
Updated: 02/20/2021 09:46
Changes: 01/27/2021 10:05 (40), 02/20/2021 09:43 (5), 02/20/2021 09:46 (18)
Complete: 🔍
Cache ID: 216::103

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