CVE-2019-13608 : Citrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6

Citrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6 LTSR before CU8 (3.0.8000) allows XXE attacks.

Published 2019-08-29 19:15:13

Updated 2019-09-04 17:24:56

Source MITRE

View at NVD, CVE.org

Vulnerability category: XML external entity (XXE) injection

Products affected by CVE-2019-13608

Citrix » Storefront Server
Versions before (<) 3.0.8000
cpe:2.3:a:citrix:storefront_server:*:*:*:*:*:*:*:*
Matching versions
Citrix » Storefront Server
Versions before (<) 1903
cpe:2.3:a:citrix:storefront_server:*:*:*:*:*:*:*:*
Matching versions
Citrix » Storefront Server
Versions before (<) 3.12.4000
cpe:2.3:a:citrix:storefront_server:*:*:*:*:*:*:*:*
Matching versions

CVE-2019-13608 is in the CISA Known Exploited Vulnerabilities Catalog

This issue is known to have been leveraged as part of a ransomware campaign.

CISA vulnerability name:

Citrix StoreFront Server XML External Entity (XXE) Processing Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA description:

Citrix StoreFront Server contains an XML External Entity (XXE) processing vulnerability that may allow an unauthenticated attacker to retrieve potentially sensitive information.

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2019-13608

Added on 2021-11-03 Action due date 2022-05-03

Exploit prediction scoring system (EPSS) score for CVE-2019-13608

EPSS FAQ

0.63%

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

~ 76 %

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

CVSS scores for CVE-2019-13608

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:3.0/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-2019-13608

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-2019-13608

https://support.citrix.com/article/CTX251988

CVE-2019-13608 - XML External Entity (XXE) Processing Vulnerability in Citrix StoreFront Server
Mitigation;Vendor Advisory