PT-2021-13907 · Ibm · Ibm Websphere Application Server

Published 2021-02-18 · Updated 2021-02-22 · CVE-2021-20354

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions: IBM WebSphere Application Server versions 8.0, 8.5, and 9.0

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

Recommendations: For IBM WebSphere Application Server versions 8.0, 8.5, and 9.0, consider restricting access to sensitive files and directories to minimize the risk of exploitation until a patch is available. As a temporary workaround, consider disabling the directory traversal functionality until a patch is available. Avoid using URL requests that contain "dot dot" sequences (/../) in the affected API endpoint until the issue is resolved. 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-2021-20354

Affected Products

Ibm Websphere Application Server

References · 5

• https://exchange.xforce.ibmcloud.com/vulnerabilities/194883 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-20354 · Vendor Advisory
• https://ibm.com/support/pages/node/6415959 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20354 · Security Note
• https://t.me/cibsecurity/23806 · Telegram Post