CVE-2023-48365KEV · OVERDUE

Qlik Sense HTTP Tunneling Vulnerability

Critical · published November 15, 2023

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.6. It is confirmed in active exploitation. It sits in the 98.8th percentile for exploit probability.

629
days past CISA
deadline
CVSS v3.1
9.6
EPSS
47%
Percentile
98.8
In the wild
Confirmed
What it is

🔥 A single malformed HTTP header could open the floodgates! This critical vulnerability in Qlik Sense Enterprise allows unauthenticated remote code execution, making it a playground for attackers. 🚨 Imagine a delivery person who doesn't check packages properly, allowing anyone to sneak in dangerous items without inspection — that's what this vulnerability does with HTTP requests! A remote attacker can elevate their privileges like a con artist gaining backstage access at a concert without a ticket. The consequences of this vulnerability are absolutely devastating. An attacker could execute harmful code on the backend server, gaining control over sensitive applications and data. This could lead to data breaches, service disruptions, and a total loss of trust for your organization!

Put simply

Imagine a delivery person who doesn't check packages properly, allowing anyone to sneak in dangerous items without inspection — that's what this vulnerability does with HTTP requests! A remote attacker can elevate their privileges like a con artist gaining backstage access at a concert without a ticket. This vulnerability stems from improper validation of HTTP headers, allowing attackers to tunnel requests to the backend server that hosts the repository application. An incomplete fix for a previous vulnerability, CVE-2023-41265, contributed to this critical issue.

What to do

The consequences of this vulnerability are absolutely devastating. An attacker could execute harmful code on the backend server, gaining control over sensitive applications and data. This could lead to data breaches, service disruptions, and a total loss of trust for your organization! To protect yourself, patch immediately to August 2023 Patch 2 or any of the earlier patched versions listed. Additionally, review your security policies around HTTP headers and implement strict validation to mitigate the risk of this exploitation. You've got this! Follow these steps and you'll have your systems fortified in no time. 🛡️

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AC:L/AV:N/A:N/C:H/I:H/PR:L/S:C/UI:N
CVSS v4.0
Not supplied
EPSS
0.47453 · 98.8th percentile
Published
2023-11-15T00:00Z
KEV added
2025-01-13 · due 2025-02-03
EPSS history
Timeline
  • 25 SEP 03:17Z
    EPSS moved 24% → 47%
    epss
  • 13 JAN 00:00Z
    Added to CISA KEV — remediate by Feb 3
    kev
  • 15 NOV 00:00Z
    Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683
    cvelistv5