NTLM hash disclosure via outbound SMB authentication
Published Apr 13, 2021 · Updated Aug 3, 2024
Information disclosure in SAP NetWeaver AS for Java telnet commands allows remote attackers to obtain a privileged user's NTLM hash. A command argument triggers an outbound SMB authentication exchange, exposing the administrator's NTLM challenge-response material. Exploitation requires an administrator with telnet access to invoke attacker-influenced command input; the reported consequence is credential-hash disclosure only.
Summary
What happened
Information disclosure in SAP NetWeaver AS for Java telnet commands allows remote attackers to obtain a privileged user's NTLM hash. A command argument triggers an outbound SMB authentication exchange, exposing the administrator's NTLM challenge-response material. Exploitation requires an administrator with telnet access to invoke attacker-influenced command input; the reported consequence is credential-hash disclosure only.
The record
- CVE
- CVE-2021-21485
- Published
- Apr 13, 2021
- Updated
- Aug 3, 2024
- Vendor
- SAP SE
- Product
- SAP NetWeaver AS for Java (Telnet Commands)
- Classifications
- T1187
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 13, 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=ENGINEAPI 7.30, 7.31, 7.40, 7.50
- Affected versionversion=ESP_FRAMEWORK 7.10, 7.20, 7.30, 7.31, 7.40, 7.50
- Affected versionversion=J2EE-FRMW 7.10, 7.20, 7.30, 7.31, 7.40, 7.50
- Affected versionversion=SERVERCORE 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 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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