CVE-2020-11991 : When using the StreamGenerator, the code parse a user-provided XML. A specially

When using the StreamGenerator, the code parse a user-provided XML. A specially crafted XML, including external system entities, could be used to access any file on the server system.

Published 2020-09-11 14:15:11

Updated 2020-09-17 16:37:40

Source Apache Software Foundation

View at NVD, CVE.org

Vulnerability category: XML external entity (XXE) injection

Products affected by CVE-2020-11991

Apache » Cocoon
Versions from including (>=) 2.1 and up to, including, (<=) 2.1.12
cpe:2.3:a:apache:cocoon:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2020-11991

Top countries where our scanners detected CVE-2020-11991

Top open port discovered on systems with this issue 80

IPs affected by CVE-2020-11991 90

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-11991!

^*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-2020-11991

EPSS FAQ

88.94%

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

~ 99 %

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

CVSS scores for CVE-2020-11991

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2020-11991

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-2020-11991

https://lists.apache.org/thread.html/r77add973ea521185e1a90aca00ba9dae7caa8d8b944d92421702bb54%40%3Cusers.cocoon.apache.org%3E

[CVE-2020-11991] Apache Cocoon security vulnerability - Pony Mail
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