CVE-2021-38162 is a vulnerability in SAP Web Dispatcher
Published on September 14, 2021
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 Analysis
CVE-2021-38162 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
What is a HTTP Request Smuggling Vulnerability?
When malformed or abnormal HTTP requests are interpreted by one or more entities in the data flow between the user and the web server, such as a proxy or firewall, they can be interpreted inconsistently, allowing the attacker to "smuggle" a request to one device without the other device being aware of it.
CVE-2021-38162 has been classified to as a HTTP Request Smuggling vulnerability or weakness.
Products Associated with CVE-2021-38162
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Affected Versions
SAP SE SAP Web Dispatcher:- Version WEBDISP - 7.49 is affected.
- Version 7.53 is affected.
- Version 7.77 is affected.
- Version 7.81 is affected.
- Version KRNL64NUC - 7.22 is affected.
- Version 7.22EXT is affected.
- Version 7.49 is affected.
- Version KRNL64UC -7.22 is affected.
- Version KERNEL - 7.22 is affected.
- Version 7.83 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.