Nextcloud up to 25.0.10/26.0.5/27.0.x Memcached excessive authentication

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Nextcloud up to 25.0.10/26.0.5/27.0.x and classified as problematic. This affects an unknown part of the component Memcached Handler. Such manipulation leads to excessive authentication. This vulnerability is listed as CVE-2023-45148. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Nextcloud up to 25.0.10/26.0.5/27.0.x (Cloud Software). It has been rated as problematic. Affected by this issue is an unknown code of the component Memcached Handler. The manipulation with an unknown input leads to a excessive authentication vulnerability. Using CWE to declare the problem leads to CWE-307. The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks. Impacted is confidentiality. CVE summarizes:

Nextcloud is an open source home cloud server. When Memcached is used as `memcache.distributed` the rate limiting in Nextcloud Server could be reset unexpectedly resetting the rate count earlier than intended. Users are advised to upgrade to versions 25.0.11, 26.0.6 or 27.1.0. Users unable to upgrade should change their config setting `memcache.distributed` to `\OC\Memcache\Redis` and install Redis instead of Memcached.

The weakness was presented 10/16/2023 as GHSA-xmhp-7vr4-hp63. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-45148 since 10/04/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1110.001.

Upgrading to version 25.0.11, 26.0.6 or 27.1.0 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

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

CVSSv2info

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

Exploitinginfo

Class: Excessive authentication
CWE: CWE-307 / CWE-799 / CWE-400
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 25.0.11/26.0.6/27.1.0
Patch: github.com

Timelineinfo

10/04/2023 🔍
10/16/2023 +12 days 🔍
10/16/2023 +0 days 🔍
10/16/2023 +0 days 🔍

Sourcesinfo

Advisory: GHSA-xmhp-7vr4-hp63
Status: Confirmed

CVE: CVE-2023-45148 (🔍)
GCVE (CVE): GCVE-0-2023-45148
GCVE (VulDB): GCVE-100-242288

Entryinfo

Created: 10/16/2023 23:37
Changes: 10/16/2023 23:37 (52)
Complete: 🔍
Cache ID: 216::103

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