VDB-200929 · CVE-2022-29243 · GHSA-7cwm-qph5-4h5w

Nextcloud Server up to 22.2.6/23.0.3 Session Name resource consumption

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.
4.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Nextcloud Server up to 22.2.6/23.0.3. This vulnerability affects unknown code of the component Session Name Handler. This manipulation causes resource consumption. The identification of this vulnerability is CVE-2022-29243. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Nextcloud Server up to 22.2.6/23.0.3 (Cloud Software) and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Session Name Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability.

The weakness was shared 06/01/2022 as GHSA-7cwm-qph5-4h5w. The advisory is shared at github.com. This vulnerability is known as CVE-2022-29243 since 04/13/2022. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 22.2.7 or 23.0.4 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.

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Productinfo

Type

Cloud Software

Vendor

Nextcloud

Name

Server

Version

License

open-source

Website

Product: https://github.com/nextcloud/server/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (GitHub, Inc.): 🔍

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: 🔍

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: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Server 22.2.7/23.0.4
Patch: github.com

Timelineinfo

04/13/2022 🔍
06/01/2022 +49 days 🔍
06/01/2022 +0 days 🔍
06/04/2022 +3 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-7cwm-qph5-4h5w
Status: Confirmed

CVE: CVE-2022-29243 (🔍)
GCVE (CVE): GCVE-0-2022-29243
GCVE (VulDB): GCVE-100-200929

Entryinfo

Created: 06/01/2022 08:16
Updated: 06/04/2022 10:29
Changes: 06/01/2022 08:16 (52), 06/04/2022 10:29 (1)
Complete: 🔍
Cache ID: 216::103