Internal network enumeration via unchecked resource URL
Published Apr 19, 2024 · Updated Aug 2, 2024
SSRF in the /api/resource endpoint in Memos before 0.22.0 allows remote authenticated users to enumerate the internal network. The resource-creation handler accepts an ExternalLink, checks only for an HTTP or HTTPS scheme, and passes the URL to http.Get when DownloadToLocal is true. Any signed-in user who can create a resource can make the server contact chosen internal addresses and infer reachable services from the resulting responses.
Summary
What happened
SSRF in the /api/resource endpoint in Memos before 0.22.0 allows remote authenticated users to enumerate the internal network. The resource-creation handler accepts an ExternalLink, checks only for an HTTP or HTTPS scheme, and passes the URL to http.Get when DownloadToLocal is true. Any signed-in user who can create a resource can make the server contact chosen internal addresses and infer reachable services from the resulting responses.
The record
- CVE
- CVE-2024-29030
- Published
- Apr 19, 2024
- Updated
- Aug 2, 2024
- Vendor
- Memos
- Product
- Memos
- Classifications
- CWE-918, T1046
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 19, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.13.2
- Affected versionversion=< 0.22.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- GitHub Security Lab resource-endpoint SSRF proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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