Local information disclosure via sensitive-data logging
Published Nov 9, 2021 · Updated Aug 4, 2024
Sensitive-data logging in Siemens SIMATIC WinCC and PCS 7 allows local users to read information recorded in application log files. The advisory does not identify the affected log files, the sensitive fields, or the logging routine that writes them. Exploitation requires low-privilege local access to those files and exposes recorded information for disclosure or use in follow-on attacks.
Summary
What happened
Sensitive-data logging in Siemens SIMATIC WinCC and PCS 7 allows local users to read information recorded in application log files. The advisory does not identify the affected log files, the sensitive fields, or the logging routine that writes them. Exploitation requires low-privilege local access to those files and exposes recorded information for disclosure or use in follow-on attacks.
The record
- CVE
- CVE-2021-40364
- Published
- Nov 9, 2021
- Updated
- Aug 4, 2024
- Vendor
- Siemens
- Product
- SIMATIC WinCC
- Classifications
- CWE-532, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 9, 2021CVE 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 5
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.
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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