Unauth Request Injection in SAP Web Dispatcher 7.49-7.90
CVE-2023-33987 Published on July 11, 2023
Request smuggling and request concatenation in SAP Web Dispatcher
An unauthenticated attacker in SAP Web Dispatcher - versions WEBDISP 7.49, WEBDISP 7.53, WEBDISP 7.54, WEBDISP 7.77, WEBDISP 7.81, WEBDISP 7.85, WEBDISP 7.88, WEBDISP 7.89, WEBDISP 7.90, KERNEL 7.49, KERNEL 7.53, KERNEL 7.54 KERNEL 7.77, KERNEL 7.81, KERNEL 7.85, KERNEL 7.88, KERNEL 7.89, KERNEL 7.90, KRNL64NUC 7.49, KRNL64UC 7.49, KRNL64UC 7.53, HDB 2.00, XS_ADVANCED_RUNTIME 1.00, SAP_EXTENDED_APP_SERVICES 1, can 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 information on the server or make it temporarily unavailable.
Vulnerability Analysis
CVE-2023-33987 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high 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-2023-33987 has been classified to as a HTTP Request Smuggling vulnerability or weakness.
Products Associated with CVE-2023-33987
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2023-33987 are published in SAP Web Dispatcher:
Affected Versions
SAP_SE SAP Web Dispatcher:- Version WEBDISP 7.49 is affected.
- Version WEBDISP 7.53 is affected.
- Version WEBDISP 7.54 is affected.
- Version WEBDISP 7.77 is affected.
- Version WEBDISP 7.81 is affected.
- Version WEBDISP 7.85 is affected.
- Version WEBDISP 7.88 is affected.
- Version WEBDISP 7.89 is affected.
- Version WEBDISP 7.90 is affected.
- Version KERNEL 7.49 is affected.
- Version KERNEL 7.53 is affected.
- Version KERNEL 7.54 KERNEL 7.77 is affected.
- Version KERNEL 7.81 is affected.
- Version KERNEL 7.85 is affected.
- Version KERNEL 7.88 is affected.
- Version KERNEL 7.89 is affected.
- Version KERNEL 7.90 is affected.
- Version KRNL64NUC 7.49 is affected.
- Version KRNL64UC 7.49 is affected.
- Version KRNL64UC 7.53 is affected.
- Version HDB 2.00 is affected.
- Version XS_ADVANCED_RUNTIME 1.00 is affected.
- Version SAP_EXTENDED_APP_SERVICES 1 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.