CVE-2021-20517

Description

IBM WebSphere Application Server Network Deployment 8.5 and 9.0 could allow a remote authenticated attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to read and delete arbitrary files on the system. IBM X-Force ID: 198435.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.10% Top 25%
Vendor Advisory ibmcloud.com Vendor Advisory ibm.com
Affected: IBM WebSphere Application Server ND
Published at:
Updated at:

References

Link Tags
https://www.ibm.com/support/pages/node/6456955 patch vendor advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/198435 vdb entry vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-20517?
CVE-2021-20517 has been scored as a high severity vulnerability.
How to fix CVE-2021-20517?
To fix CVE-2021-20517, 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-2021-20517 being actively exploited in the wild?
It is possible that CVE-2021-20517 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20517?
CVE-2021-20517 affects IBM WebSphere Application Server ND.
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