CVE-2021-41303CWE-287

Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass

published September 17, 2021

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.5th percentile for exploit probability.

CVSS
β€”
EPSS
76%
Percentile
99.5
In the wild
Unconfirmed
What it is

⚠️ A crafty HTTP request could slip past your defenses! Apache Shiro before version 1.8.0 has a sneaky authentication bypass that could leave the door wide open. πŸ”“ Think of it like a hotel front desk that forgets to check IDs for certain guests β€” they could walk in pretending to be anyone, no questions asked! πŸšͺ This oversight could allow an unauthorized user to gain access to sensitive areas of your application, leading to potential data breaches or malicious activity. If an attacker exploits this flaw, they might impersonate legitimate users and wreak havoc without ever having to prove their identity!

Put simply

Think of it like a hotel front desk that forgets to check IDs for certain guests β€” they could walk in pretending to be anyone, no questions asked! πŸšͺ This vulnerability allows an attacker to bypass authentication checks through a specially crafted HTTP request when using Apache Shiro with Spring Boot. Essentially, it’s as if the system forgot to check the guest list before letting someone in.

What to do

This oversight could allow an unauthorized user to gain access to sensitive areas of your application, leading to potential data breaches or malicious activity. If an attacker exploits this flaw, they might impersonate legitimate users and wreak havoc without ever having to prove their identity! To secure your application, promptly upgrade to Apache Shiro version 1.8.0 or later. It's also a good idea to review your authentication processes to ensure proper verification is enforced across the board. πŸ›‘οΈ You've got this! With a quick update, you'll have your defenses fortified in no time! πŸš€

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.76130 Β· 99.5th percentile
Weakness
CWE-287 Β· Improper Authentication
Published
2021-09-17T08:20Z
EPSS history
Timeline
  • 17 SEP 08:20Z
    Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass
    cvelistv5