SAP NetWeaver Directory Traversal Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
• EPSS: 47% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official description

Directory traversal vulnerability in SAP NetWeaver AS Java 7.1 through 7.5 allows remote attackers to read arbitrary files via a ..\ (dot dot backslash) in the fileName parameter to CrashFileDownloadServlet, aka SAP Security Note 2234971.

CISA: 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.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 May 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• packetstormsecurity.com/files/137528/SAP-NetWeaver-AS-JAVA-7.5-Directory-Traversal.htmlExploitThird Party AdvisoryVDB Entry
• seclists.org/fulldisclosure/2016/Jun/40ExploitMailing ListThird Party Advisory
• erpscan.io/advisories/erpscan-16-012Third Party Advisory
• erpscan.io/press-center/blog/sap-security-notes-march-2016-reviewThird Party Advisory
• launchpad.support.sap.comPermissions Required
• www.exploit-db.com/exploits/39996ExploitThird Party AdvisoryVDB Entry
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource