CVE-2017-16680
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedTwo potential audit log injections in SAP HANA extended application services 1.0, advanced model: 1) Certain HTTP/REST endpoints of controller service are missing user input validation which could allow unprivileged attackers to forge audit log lines. Hence the interpretation of audit log files could be hindered or misdirected. 2) User Account and Authentication writes audit logs into syslog and additionally writes the same audit entries into a log file. Entries in the log file miss escaping. Hence the interpretation of audit log files could be hindered or misdirected, while the entries in syslog are correct.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceSAP HANA extended application services 1.0 (advanced model) contains two log injection vulnerabilities. First, HTTP/REST endpoints in the controller service lack user input validation, allowing unprivileged attackers to inject arbitrary content into audit log files. Second, User Account and Authentication service writes audit entries to both syslog and a log file, but log file entries lack proper escaping while syslog entries are correctly handled, enabling log forgery that can hinder forensic analysis and security monitoring.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 1.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Identify SAP HANA Extended Application Services versionQuery the SAP HANA system for the installed XS Advanced (XSA) version using the XS command-line tool (xs -v) or check the product version in SAP HANA studio under the system properties. Alternatively, review the installation manifest or SAP HANA lifecycle manager for the XSA component version.Affected if The installed version is exactly 1.0 for SAP HANA Extended Application Services (XSA).
-
Confirm advanced model configuration is activeCheck if the SAP HANA XS Advanced model runtime is enabled and running. This can be verified by querying the XSA runtime status via the xs command (xs apps) or by checking the SAP HANA Web IDE for XSA availability. The advanced model runs on a separate port (typically 3XX00 range) from the classic model.Affected if XS Advanced model is enabled and running as part of the SAP HANA 1.0 installation.
-
Verify audit logging is enabled for controller serviceCheck the SAP HANA audit configuration via the ALTER SYSTEM AUDIT LOG statement or through the SAP HANA studio Audit Configuration view. Specifically verify that auditing is enabled for the XS Advanced controller service endpoints.Affected if Audit logging is turned on for the XSA controller service, which writes to audit log files.
-
Check accessibility of HTTP/REST endpoints in controller serviceIdentify exposed HTTP/REST endpoints in the XSA controller service by reviewing the xs-controller routes or checking the XSA API endpoints. These are typically accessible at the XSA runtime base URL under the /controller/ path.Affected if The controller service HTTP/REST endpoints are network-accessible to unprivileged users.
-
Inspect audit log file format for escape handlingLocate and review the XSA audit log files in the SAP HANA file system (typically under /hana/shared/<SID>/xs/data/log/ or similar paths). Compare log entries for special characters and verify whether entries match the properly escaped format seen in syslog.Affected if Audit log file entries lack proper escaping of special characters while syslog entries for the same events are correctly escaped, indicating the vulnerability is present.
A user is affected if running SAP HANA Extended Application Services version 1.0 with the advanced model enabled, audit logging configured for the controller service, and accessible HTTP/REST endpoints where log file entries show improper escaping compared to syslog entries.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement input validation on all HTTP/REST endpoints in the controller service to sanitize user-supplied data before writing to audit logs, and ensure all audit log file entries are properly escaped to match syslog handling.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-16680 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2017-16680 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data