CVE-2021-27635

Description

SAP NetWeaver AS for JAVA, versions - 7.20, 7.30, 7.31, 7.40, 7.50, allows an attacker authenticated as an administrator to connect over a network and submit a specially crafted XML file in the application because of missing XML Validation, this vulnerability enables attacker to fully compromise confidentiality by allowing them to read any file on the filesystem or fully compromise availability by causing the system to crash. The attack cannot be used to change any data so that there is no compromise as to integrity.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.08% Top 20%
Vendor Advisory sap.com Vendor Advisory sap.com
Affected: SAP SE SAP NetWeaver AS for JAVA
Published at:
Updated at:

References

Link Tags
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 vendor advisory
https://launchpad.support.sap.com/#/notes/3053066 permissions required vendor advisory
http://seclists.org/fulldisclosure/2021/Oct/28 mailing list third party advisory patch
http://packetstormsecurity.com/files/164592/SAP-JAVA-NetWeaver-System-Connections-XML-Injection.html vdb entry third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-27635?
CVE-2021-27635 has been scored as a medium severity vulnerability.
How to fix CVE-2021-27635?
To fix CVE-2021-27635, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-27635 being actively exploited in the wild?
It is possible that CVE-2021-27635 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-27635?
CVE-2021-27635 affects SAP SE SAP NetWeaver AS for JAVA.
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