SAP NetWeaver Directory Traversal Vulnerability (CVE-2016-3976)
Severity: high · Patch status: patched · Since 2021-11-03 · CVE-2016-3976
SAP NetWeaver Application Server Java Platforms contains a directory traversal vulnerability via a ..\ (dot dot backslash) in the fileName parameter to CrashFileDownloadServlet. This allows remote attackers to read files. CISA added CVE-2016-3976 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means attackers are exploiting it in the wild.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by May 3, 2022 (BOD 22-01); treat that as the outer limit.
Sources
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