CVE-2019-13608KEV · OVERDUE

Citrix StoreFront Server XML External Entity (XXE) Processing Vulnerability

High · published August 29, 2019

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.5. It is confirmed in active exploitation. It sits in the 98.2th percentile for exploit probability.

1634
days past CISA
deadline
CVSS v3.1
7.5
EPSS
30%
Percentile
98.2
In the wild
Confirmed
What it is

🚨 A sneaky XXE vulnerability in Citrix StoreFront could be your server's worst enemy! 🔥 Think of it as a delivery service that allows a package inside without checking the address — it opens the door to whatever malicious content is sent along! 📦 An attacker can exploit this flaw to access sensitive internal files, potentially leading to data leaks or even a complete system compromise. This could be absolutely devastating for your organization, as they might uncover confidential information or gain unauthorized access!

Put simply

Think of it as a delivery service that allows a package inside without checking the address — it opens the door to whatever malicious content is sent along! 📦 This vulnerability allows external entities to be processed during XML parsing, which could lead to unauthorized data access and manipulation within the server's environment.

What to do

An attacker can exploit this flaw to access sensitive internal files, potentially leading to data leaks or even a complete system compromise. This could be absolutely devastating for your organization, as they might uncover confidential information or gain unauthorized access! Immediate action is crucial! Upgrade your Citrix StoreFront to version 1903 or later, or to 7.15 LTSR CU4 (3.12.4000) or 7.6 LTSR CU8 (3.0.8000). Ensure that you're regularly applying security updates to prevent future exploits. You can tackle this vulnerability head-on — patch it and keep your environment secure! 🛡️

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.30041 · 98.2th percentile
Published
2019-08-29T18:33Z
KEV added
2021-11-03 · due 2022-05-03
EPSS history
Timeline
  • 03 NOV 00:00Z
    Added to CISA KEV — remediate by May 3
    kev
  • 29 AUG 18:33Z
    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
    cvelistv5