CVE-2023-6548KEV · OVERDUECWE-94

Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability

Medium · published January 17, 2024

Patch now

The score understates this — it's already being exploited

CVSS calls it medium at 5.5. It is confirmed in active exploitation. It sits in the 88.0th percentile for exploit probability.

1003
days past CISA
deadline
CVSS v3.1
5.5
EPSS
3%
Percentile
88.0
In the wild
Confirmed
What it is

⚠️ A sneaky code injection vulnerability lurks in NetScaler ADC and Gateway! If an attacker has low-level access to the management interface, they can execute remote code without much fuss. 🔥 Think of it like a fast-food restaurant where a disgruntled employee can sneak into the kitchen and add whatever they want to the secret sauce recipe — a little tweak could lead to disastrous results for everyone who orders their favorite meal! An attacker with just low-level access could wreak havoc by executing malicious code on the management interface, potentially compromising the system and exposing sensitive data. This could lead to unauthorized access and manipulation of critical configurations, making it a real wake-up call for your security setup!

Put simply

Think of it like a fast-food restaurant where a disgruntled employee can sneak into the kitchen and add whatever they want to the secret sauce recipe — a little tweak could lead to disastrous results for everyone who orders their favorite meal! This vulnerability allows authenticated users with low privileges to perform code injection on the management interface of NetScaler products, leading to remote code execution. It's a classic case of improper control over code generation, opening the door to exploitation.

What to do

An attacker with just low-level access could wreak havoc by executing malicious code on the management interface, potentially compromising the system and exposing sensitive data. This could lead to unauthorized access and manipulation of critical configurations, making it a real wake-up call for your security setup! To protect your systems, immediately patch to the latest version provided by Citrix that addresses CVE-2023-6548. Review access logs and ensure that only authorized personnel have access to management interfaces. Regularly audit configurations to maintain security best practices. You've got this! Fixing this vulnerability will bolster your defenses and keep your systems secure. 🛡️

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.03191 · 88.0th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2024-01-17T20:11Z
KEV added
2024-01-17 · due 2024-01-24
EPSS history
Timeline
  • 17 JAN 20:11Z
    Improper Control of Generation of Code ('Code Injection') in NetScaler ADC and NetScaler Gateway allows an attacker with access to NSIP, CLIP or SNIP with…
    cvelistv5
  • 17 JAN 00:00Z
    Added to CISA KEV — remediate by Jan 24
    kev