Authentication Bypass in Apache Shiro with Spring Framework
CVE-2020-17523

9.8CRITICAL

Key Information:

Vendor
Apache
Status
Apache Shiro
Vendor
CVE Published:
3 February 2021

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 34%

Summary

A vulnerability exists in Apache Shiro versions prior to 1.7.1 when used in conjunction with the Spring Framework. An attacker can exploit this issue by sending a specially crafted HTTP request that bypasses the intended authentication mechanisms, potentially granting unauthorized access to sensitive resources.

Affected Version(s)

Apache Shiro before 1.7.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

shiro-cve-2020-17523
Created by jweny

References

https://lists.apache.org/thread.html/rce5943430a6136d37a1...
x_refsource_MISC
https://lists.apache.org/thread.html/r5b93ddf97e2c4cda779...
mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rd4b613e121438b97e3e...
mailing-listx_refsource_MLIST

EPSS Score

34% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.