Account compromise via exposed password hash API
Published Feb 9, 2022 · Updated Aug 4, 2024
Information disclosure in Siemens SIMATIC WinCC and PCS 7 allows remote authenticated users to retrieve a local account password hash via an API. A public API on the remote server returns the hash of a local user account to an authenticated user instead of withholding credential material. Access to an affected-system account is required; the disclosed hash can be brute-forced and the recovered password used to log in to the server.
Summary
What happened
Information disclosure in Siemens SIMATIC WinCC and PCS 7 allows remote authenticated users to retrieve a local account password hash via an API. A public API on the remote server returns the hash of a local user account to an authenticated user instead of withholding credential material. Access to an affected-system account is required; the disclosed hash can be brute-forced and the recovered password used to log in to the server.
The record
- CVE
- CVE-2021-40360
- Published
- Feb 9, 2022
- Updated
- Aug 4, 2024
- Vendor
- Siemens
- Product
- SIMATIC WinCC
- Classifications
- CWE-522, CWE-200, T1110.002
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 9, 2022CVE publishedPublication date reported by the CVE source.
- Aug 4, 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=All versions < V15 SP1 Update 7
- Affected versionversion=All versions < V16 Update 5
- Affected versionversion=All versions < V17 Update 2
- Affected versionversion=All versions < V7.4 SP1 Update 19
- Affected versionversion=All versions < V7.5 SP2 Update 6
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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