IBM WebSphere Application Server 8.0.0.0 <= 8.0.0.15 / 8.5.0.0 <= 8.5.5.19 / 9.0.0.0 <= 9.0.5.7 XXE (CVE-2021-20453)

high Nessus Plugin ID 148850
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Synopsis

The remote web application server is affected by an XML External Entity (XXE) vulnerability

Description

The IBM WebSphere Application Server running on the remote host is version 8.0.x through 8.0.0.15, 8.5.x through 8.5.5.19 or 9.0.x through 9.0.5.7. It is, therefore, vulnerable to a XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to IBM WebSphere Application Server 8.5.5.20, 9.0.5.8, or later. Alternatively, upgrade to the minimal fix pack levels required by the interim fix and then apply Interim Fix PH34067.

See Also

https://www.ibm.com/support/pages/node/6445171

Plugin Details

Severity: High

ID: 148850

File Name: websphere_6445171.nasl

Version: 1.4

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 4/20/2021

Updated: 4/26/2021

Dependencies: websphere_detect.nasl, ibm_enum_products.nbin, ibm_websphere_application_server_nix_installed.nbin

Risk Information

CVSS Score Source: CVE-2021-20453

VPR

Risk Factor: Medium

Score: 5

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:ibm:websphere_application_server

Required KB Items: installed_sw/IBM WebSphere Application Server

Exploit Ease: No known exploits are available

Patch Publication Date: 4/19/2021

Vulnerability Publication Date: 4/19/2021

Reference Information

CVE: CVE-2021-20453

IAVA: 2021-A-0189