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CVE-2023-49791— Workflows do not require password confirmation on API level

Quick assessment

Affected
nextcloud security-advisories
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 Server存在访问控制错误漏洞，该漏洞源于当攻击者设法通过其他方式访问另一个用户的活动会话时，可以通过绕过直接向API发送调用来删除和修改工作流程。

CVSS 5.4 · Medium EPSS 0.61% · P47
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I. Basic Information for CVE-2023-49791

Vulnerability Information
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Vulnerability Title
Workflows do not require password confirmation on API level
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. In Nextcloud Server prior to versions 26.0.9 and 27.1.4; as well as Nextcloud Enterprise Server prior to versions 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, and 27.1.4; when an attacker manages to get access to an active session of another user via another way, they could delete and modify workflows by sending calls directly to the API bypassing the password confirmation shown in the UI. Nextcloud Server versions 26.0.9 and 27.1.4 and Nextcloud Enterprise Server versions 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, and 27.1.4 contain a patch for this issue. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 访问控制错误漏洞
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 Server存在访问控制错误漏洞，该漏洞源于当攻击者设法通过其他方式访问另一个用户的活动会话时，可以通过绕过直接向API发送调用来删除和修改工作流程。
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 >= 23.0.0, < 23.0.12.13 -

II. Public POCs for CVE-2023-49791

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III. Intelligence Information for CVE-2023-49791

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Patches & Fixes for CVE-2023-49791 (1)

Vendor Advisories for CVE-2023-49791 (1)

Other References for CVE-2023-49791 (1)

Same Patch Batch · nextcloud · 2023-12-22 · 3 CVEs total

CVE-2023-49792 5.3 MEDIUM Bruteforce protection can be bypassed with misconfigured proxy
CVE-2023-49790 4.3 MEDIUM App PIN code can be bypassed in Nextcloud Files iOS

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-284

V. Comments for CVE-2023-49791

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