CVE-2023-28644— Reference fetch can saturate the server bandwidth for 10 seconds in nextcloud server
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I. Basic Information for CVE-2023-28644
Vulnerability Information
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Vulnerability Title
Reference fetch can saturate the server bandwidth for 10 seconds in nextcloud server
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nextcloud server is an open source home cloud implementation. In releases of the 25.0.x branch before 25.0.3 an inefficient fetch operation may impact server performances and/or can lead to a denial of service. This issue has been addressed and it is recommended that the Nextcloud Server is upgraded to 25.0.3. There are no known workarounds for this vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud 25.0.3 之前的 25.0.x版本存在资源管理错误漏洞，该漏洞源于低效的提取操作可能会影响服务器性能或可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| nextcloud | security-advisories | >= 25.0.0, < 25.0.3 | - |
II. Public POCs for CVE-2023-28644
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/nextcloud/server/pull/36016x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2023-28644
Same Patch Batch · nextcloud · 2023-03-30 · 7 CVEs total
| CVE-2023-26482 | 9.1 CRITICAL | Scope of workflow operations is not validated in nextcloud server |
| CVE-2023-28643 | 5.5 MEDIUM | Potential share collision for recipients when caching is enabled in nextcloud server |
| CVE-2023-28646 | 4.4 MEDIUM | App lockout in nextcloud Android app can be bypassed via thirdparty apps |
| CVE-2023-28647 | 4.4 MEDIUM | App pin of the iOS app can be bypassed in Nextcloud iOS |
| CVE-2023-28835 | 3.5 LOW | Insecure randomness for default password in nextcloud |
| CVE-2023-28833 | 2.4 LOW | Unrestricted filenames for logo or favicon as admin in the theming settings in nextcloud s |
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V. Comments for CVE-2023-28644
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