CVE-2019-12524

An issue was discovered in Squid through 4.7

published April 15, 2020

CVSS
—
EPSS
4%
Percentile
90.1
In the wild
Unconfirmed
What it is

⚠️ A sneaky URL trick can bypass Squid's access rules! An attacker could decode their way into restricted areas, exposing sensitive server info. 🔥 Think of Squid as a bouncer at an exclusive club, checking IDs at the door. If a party-goer cleverly disguises their ticket with a fake name, they could slip right past the bouncer and into the VIP section! If this vulnerability is exploited, an attacker could gain access to the Cache Manager, which provides detailed server information meant only for maintainers. This could lead to unauthorized access to sensitive configurations and potential exploitation of the server. Yikes!

Put simply

Think of Squid as a bouncer at an exclusive club, checking IDs at the door. If a party-goer cleverly disguises their ticket with a fake name, they could slip right past the bouncer and into the VIP section! This vulnerability occurs because Squid's URL decoding allows attackers to bypass its url_regex checks, potentially granting unauthorized access to restricted resources.

What to do

If this vulnerability is exploited, an attacker could gain access to the Cache Manager, which provides detailed server information meant only for maintainers. This could lead to unauthorized access to sensitive configurations and potential exploitation of the server. Yikes! To safeguard your systems, ensure you upgrade to the latest version of Squid where this issue has been addressed. Additionally, review your access controls and consider implementing further security measures for sensitive endpoints. Don't leave the bouncer at the door relaxing! You've got this! With these steps, you'll keep your server data safe and sound! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03862 · 90.1th percentile
Published
2020-04-15T18:35Z
EPSS history
Timeline
  • 15 APR 18:35Z
    An issue was discovered in Squid through 4.7
    cvelistv5