Authentication bypass in Apache Shiro



Published: 2021-02-01
Risk High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-17523
CWE ID CWE-287
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Apache Shiro
Universal components / Libraries / Software for developers

Vendor Apache Foundation

Security Advisory

This security advisory describes one high risk vulnerability.

1) Improper Authentication

Risk: High

CVSSv3.1: 8.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-17523

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests in Apache Shiro with Spring. A remote attacker can send a specially crafted HTTP request to bypass authentication process and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Shiro: 1.0.0, 1.1.0, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.3.0, 1.3.1, 1.3.2, 1.4.0, 1.4.1, 1.4.2, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.6.0, 1.7.0

CPE External links

http://seclists.org/oss-sec/2021/q1/94

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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