CVE-2020-17523

Apache Shiro before 1.7.1, when using Apache Shiro with Spring, a specially crafted HTTP request may cause an authentication bypass

published February 3, 2021

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.7th percentile for exploit probability.

CVSS
—
EPSS
86%
Percentile
99.7
In the wild
Unconfirmed
What it is

⚠️ A crafted HTTP request can skip authentication in Apache Shiro, like a sneaky guest slipping past a bouncer without a proper ID! Think of it as a restaurant where a diner can walk right past the host and sit at any table without checking in. This vulnerability allows unauthorized access, leading to possible data exposure or manipulation. An attacker could exploit this flaw to gain access to sensitive resources without proper authentication, potentially leading to unauthorized actions on the server. This is a serious issue, as it could compromise the security of your entire application.

Put simply

Think of it as a restaurant where a diner can walk right past the host and sit at any table without checking in. This vulnerability allows unauthorized access, leading to possible data exposure or manipulation. This vulnerability in Apache Shiro versions prior to 1.7.1 allows a specially crafted HTTP request to bypass authentication mechanisms when used with Spring, opening the door to unauthorized access.

What to do

An attacker could exploit this flaw to gain access to sensitive resources without proper authentication, potentially leading to unauthorized actions on the server. This is a serious issue, as it could compromise the security of your entire application. Upgrade to Apache Shiro version 1.7.1 or later to close this security hole. Additionally, review your configurations to ensure robust authentication checks are in place. Regularly audit your security practices to mitigate risks further. You've got this! With the right steps, you can secure your application and keep the internet a safer place! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.85911 · 99.7th percentile
Published
2021-02-03T16:55Z
EPSS history
Timeline
  • 03 FEB 16:55Z
    Apache Shiro before 1.7.1, when using Apache Shiro with Spring, a specially crafted HTTP request may cause an authentication bypass
    cvelistv5