Ubuntu update for shiro

Published: 2021-02-18

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-11989 CVE-2020-1957
CWE-ID	CWE-287
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system libshiro-java (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper Authentication

EUVDB-ID: #VU45756

Risk: Medium

CVSSv3.1: 6.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-11989

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 dynamic controllers. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation

Update the affected package shiro to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

libshiro-java (Ubuntu package): before 1.3.2-4ubuntu0.1

External links

http://ubuntu.com/security/notices/USN-4740-1

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.

2) Improper Authentication

EUVDB-ID: #VU26475