CVE-2020-11580

An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06

published April 6, 2020

CVSS
โ€”
EPSS
1%
Percentile
64.6
In the wild
Unconfirmed
What it is

โš ๏ธ An unwelcome guest can shake hands with an arbitrary SSL certificate! This sneaky flaw in Pulse Secure's Pulse Connect Secure (PCS) could let untrusted sources waltz right into your secure network. ๐Ÿ˜ฑ Think of it like a bouncer at a nightclub who lets anyone with a fake ID inside โ€” they never check if it's real. This flaw allows the tncc.jar applet on macOS, Linux, and Solaris to accept any SSL certificate, even if it's forged. If an attacker exploits this vulnerability, they could potentially intercept communications, access sensitive information, or even perform malicious actions as if they were a legitimate user. It's like giving the keys to your castle to someone who didn't even pass the background check!

Put simply

Think of it like a bouncer at a nightclub who lets anyone with a fake ID inside โ€” they never check if it's real. This flaw allows the tncc.jar applet on macOS, Linux, and Solaris to accept any SSL certificate, even if it's forged. This vulnerability occurs because the tncc.jar applet fails to properly validate SSL certificates during host checks, allowing arbitrary certificates to be accepted without verification.

What to do

If an attacker exploits this vulnerability, they could potentially intercept communications, access sensitive information, or even perform malicious actions as if they were a legitimate user. It's like giving the keys to your castle to someone who didn't even pass the background check! To mitigate this issue, ensure that you're running the latest version of Pulse Connect Secure, which addresses this vulnerability. Additionally, review your Host Checker policies and enforce stricter SSL certificate validation. Regularly audit your security protocols to ensure no untrusted certificates are in use. You've got this! Stay vigilant, implement these fixes, and keep your network secure! ๐Ÿ›ก๏ธ

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01072 ยท 64.6th percentile
Published
2020-04-06T20:03Z
EPSS history
Timeline
  • 06 APR 20:03Z
    An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06
    cvelistv5