CVE-2018-15387CWE-20

Cisco SD-WAN Solution Certificate Validation Bypass Vulnerability

published October 5, 2018

CVSS
—
EPSS
1%
Percentile
65.4
In the wild
Unconfirmed
What it is

🚨 A crafty certificate bypass is lurking in the Cisco SD-WAN solution! An attacker can slip through the defenses without breaking a sweat. ⚡ Think of it like a restaurant that doesn’t check IDs at the door — anyone could walk in and pretend to be a trusted chef. If they serve something dubious, it could spoil the whole dining experience! If an attacker exploits this vulnerability, they could deploy a malicious system image, potentially taking control of the affected device. This means they could manipulate configurations, access sensitive data, or disrupt services — a recipe for chaos!

Put simply

Think of it like a restaurant that doesn’t check IDs at the door — anyone could walk in and pretend to be a trusted chef. If they serve something dubious, it could spoil the whole dining experience! This vulnerability arises from improper certificate validation, allowing an unauthenticated attacker to use a crafted certificate to bypass security measures and install a rogue system image on the device.

What to do

If an attacker exploits this vulnerability, they could deploy a malicious system image, potentially taking control of the affected device. This means they could manipulate configurations, access sensitive data, or disrupt services — a recipe for chaos! To protect against this vulnerability, ensure that your Cisco SD-WAN solution is updated to the latest version that includes the necessary patches. Regularly audit your certificate validation processes to ensure only authorized images are accepted. 🛡️ This is fixable! Stay proactive, follow these steps, and you’ll keep your network secure. You've got this! 💪

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01099 · 65.4th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2018-10-05T14:00Z
EPSS history
Timeline
  • 05 OCT 14:00Z
    Cisco SD-WAN Solution Certificate Validation Bypass Vulnerability
    cvelistv5