CVE-2021-20353 : IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to an XML External Entity Injection (XXE) attack w

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to an 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. IBM X-Force ID: 194882.

Published 2021-02-10 17:15:22

Updated 2021-02-11 23:03:40

Source IBM Corporation

View at NVD, CVE.org

Vulnerability category: XML external entity (XXE) injection

Threat overview for CVE-2021-20353

Top countries where our scanners detected CVE-2021-20353

Top open port discovered on systems with this issue 9080

IPs affected by CVE-2021-20353 598

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2021-20353!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2021-20353

EPSS FAQ

1.25%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 86 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-20353

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.4	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:P	10.0	4.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: Partial
8.2	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L	3.9	4.2	IBM Corporation
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: Low
8.2	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L	3.9	4.2	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: Low

CWE ids for CVE-2021-20353

CWE-611 Improper Restriction of XML External Entity Reference

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-20353

https://www.ibm.com/support/pages/node/6413709

Security Bulletin: WebSphere Application Server is vulnerable to an XML External Entity (XXE) Injection vulnerability (CVE-2021-20353)
Patch;Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-174/

ZDI-21-174 | Zero Day Initiative
Third Party Advisory;VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/194882

IBM WebSphere Application Server XML external enitity injection CVE-2021-20353 Vulnerability Report
VDB Entry;Vendor Advisory

Products affected by CVE-2021-20353