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CVE-2024-53991— Potential Backup file leaked via Nginx in Discourse

CVSS 7.5 · High EPSS 53.12% · P98
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I. Basic Information for CVE-2024-53991

Vulnerability Information
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Vulnerability Title
Potential Backup file leaked via Nginx in Discourse
Source: NVD (National Vulnerability Database)
Vulnerability Description
Discourse is an open source platform for community discussion. This vulnerability only impacts Discourse instances configured to use `FileStore::LocalStore` which means uploads and backups are stored locally on disk. If an attacker knows the name of the Discourse backup file, the attacker can trick nginx into sending the Discourse backup file with a well crafted request. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. Users unable to upgrade can either 1. Download all local backups on to another storage device, disable the `enable_backups` site setting and delete all backups until the site has been upgraded to pull in the fix. Or 2. Change the `backup_location` site setting to `s3` so that backups are stored and downloaded directly from S3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Discourse 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Discourse是Discourse开源的一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse存在信息泄露漏洞，该漏洞源于使用FileStore::LocalStore存储上传和备份文件在本地磁盘时，如果攻击者知道备份文件名，可以通过特殊请求获取这些文件。
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

VendorProductAffected VersionsCPESubscribe
discoursediscourse stable: <= 3.3.2 -

II. Public POCs for CVE-2024-53991

#POC DescriptionSource LinkShenlong Link
1Discourse is an open source platform for community discussion. This vulnerability only impacts Discourse instances configured to use `FileStore--LocalStore` which means uploads and backups are stored locally on disk. If an attacker knows the name of the Discourse backup file, the attacker can trick nginx into sending the Discourse backup file with a well crafted request. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-53991.yamlPOC Details
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III. Intelligence Information for CVE-2024-53991

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Same Patch Batch · discourse · 2024-12-19 · 4 CVEs total

CVE-2024-527946.8 MEDIUMMagnific lightbox susceptible to Cross-site Scripting in Discourse
CVE-2024-497655.3 MEDIUMBypass of Discourse Connect using other login paths if enabled in Discourse
CVE-2024-525892.2 LOWModerators can view Screened emails even when the “moderators view emails” option is disab

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-200

V. Comments for CVE-2024-53991

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