Vulnerability in SAP Web Dispatcher
CVE-2021-38162
SAP Web Dispatcher versions - 7.49, 7.53, 7.77, 7.81, KRNL64NUC - 7.22, 7.22EXT, 7.49, KRNL64UC -7.22, 7.22EXT, 7.49, 7.53, KERNEL - 7.22, 7.49, 7.53, 7.77, 7.81, 7.83 processes allow an unauthenticated attacker to submit a malicious crafted request over a network to a front-end server which may, over several attempts, result in a back-end server confusing the boundaries of malicious and legitimate messages. This can result in the back-end server executing a malicious payload which can be used to read or modify any information on the server or consume server resources making it temporarily unavailable.
Vulnerability class: HTTP Request Smuggling
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.9 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.027 (85.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- SAP Web Dispatcher — versions 7.22ext, 7.49, 7.53
- SAP Se Web Dispatcher — versions WEBDISP - 7.49, 7.53, 7.77
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wiki.scn.sap.com/wiki/pages/viewpage.action (Vendor Advisory)
- launchpad.support.sap.com/ (Permissions Required)
- seclists.org/fulldisclosure/2022/May/3 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/166964/SAP-Web-Dispatcher-HTTP-Request-Smuggling… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-38162?
- CVE-2021-38162 is a high-severity vulnerability in SAP Web Dispatcher, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 8.9/10. Published 2021-09-14.
- How severe is CVE-2021-38162?
- High severity. CVSS v3 base score is 8.9 out of 10.
- Is CVE-2021-38162 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.