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CVE-2022-35921— User preference to prevent private discussions not respected in fof/byobu

Quick assessment

Affected
FriendsOfFlarum byobu
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.

Flarum是Flarum社区的一套开源的论坛系统。 Flarum 的 Byobu 扩展 1.1.7之前版本存在安全漏洞，该漏洞源于Byobu是Flarum论坛的一个私人讨论扩展，受影响的版本被发现不允许私人讨论由用户禁用。Byobu的用户应该将扩展更新到1.1.7版本，这个版本已经修补。使用Flarum 1.0或1.1的Byobu用户应该升级到Flarum 1.2或更高版本或者评估这个问题对论坛用户的影响，并在必要时选择禁用该扩展，这个问题没有解决的办法。

CVSS 3.5 · Low EPSS 0.51% · P42

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2022-35921

Vulnerability Information
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Vulnerability Title
User preference to prevent private discussions not respected in fof/byobu
Source: CVE Program / CVE List V5
Vulnerability Description
fof/byobu is a private discussions extension for Flarum forum. Affected versions were found to not respect private discussion disablement by users. Users of Byobu should update the extension to version 1.1.7, where this has been patched. Users of Byobu with Flarum 1.0 or 1.1 should upgrade to Flarum 1.2 or later, or evaluate the impact this issue has on your forum's users and choose to disable the extension if needed. There are no workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Flarum 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flarum是Flarum社区的一套开源的论坛系统。 Flarum 的 Byobu 扩展 1.1.7之前版本存在安全漏洞，该漏洞源于Byobu是Flarum论坛的一个私人讨论扩展，受影响的版本被发现不允许私人讨论由用户禁用。Byobu的用户应该将扩展更新到1.1.7版本，这个版本已经修补。使用Flarum 1.0或1.1的Byobu用户应该升级到Flarum 1.2或更高版本或者评估这个问题对论坛用户的影响，并在必要时选择禁用该扩展，这个问题没有解决的办法。
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
FriendsOfFlarum byobu >=0.3.0-beta.2, < 1.1.7 -

II. Public POCs for CVE-2022-35921

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III. Intelligence Information for CVE-2022-35921

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Patches & Fixes for CVE-2022-35921 (1)

Vendor Advisories for CVE-2022-35921 (1)

IV. Related Vulnerabilities

Same product: byobu
Same vendor: FriendsOfFlarum
Same weakness: CWE-269

V. Comments for CVE-2022-35921

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