Authenticated SSRF via unrestricted servlet request targets
Published Sep 15, 2021 · Updated Aug 3, 2024
SSRF in SAP NetWeaver CBS 7.11, 7.20, 7.30, 7.31, 7.40, and 7.50 allows remote authenticated users to proxy requests. An exposed servlet accepts attacker-controlled query data and initiates server-originated requests without restricting the destination. A valid low-privilege account and network access to CBS are required; successful requests can reach otherwise inaccessible resources, expose sensitive server data, and interrupt service.
Summary
What happened
SSRF in SAP NetWeaver CBS 7.11, 7.20, 7.30, 7.31, 7.40, and 7.50 allows remote authenticated users to proxy requests. An exposed servlet accepts attacker-controlled query data and initiates server-originated requests without restricting the destination. A valid low-privilege account and network access to CBS are required; successful requests can reach otherwise inaccessible resources, expose sensitive server data, and interrupt service.
The record
- CVE
- CVE-2021-33690
- Published
- Sep 15, 2021
- Updated
- Aug 3, 2024
- Vendor
- SAP SE
- Product
- SAP NetWeaver Development Infrastructure (Component Build Service)
- Classifications
- CWE-918, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 15, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 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=< 7.11
- Affected versionversion=< 7.20
- Affected versionversion=< 7.30
- Affected versionversion=< 7.31
- Affected versionversion=< 7.40
- Affected versionversion=< 7.50
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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