PT-2021-14012 · Ibm · Ibm Websphere Application Server Network Deployment

Alessio Dalla Piazza · Published 2021-06-07 · Updated 2021-06-10 · CVE-2021-20517

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: IBM WebSphere Application Server Network Deployment versions 8.5 through 9.0

Description: The issue allows a remote authenticated attacker to traverse directories by sending a specially-crafted URL request containing dot dot sequences (/../) to read and delete arbitrary files on the system.

Recommendations: For IBM WebSphere Application Server Network Deployment versions 8.5 through 9.0, consider restricting access to sensitive files and directories to minimize the risk of exploitation. As a temporary workaround, consider implementing additional validation and sanitization of URL requests to prevent directory traversal attacks. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2021-20517

Affected Products

Ibm Websphere Application Server Network Deployment

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-20517 · Security Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/198435 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-20517 · Vendor Advisory
• https://ibm.com/support/pages/node/6456955 · Vendor Advisory
• https://t.me/cvenotify/15698 · Telegram Post