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Ubuntu Security Notice USN-4740-1

Ubuntu Security Notice USN-4740-1
Posted Feb 19, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4740-1 - It was discovered that Apache Shiro mishandled specially crafted requests. An attacker could use this vulnerability to bypass authentication mechanisms.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2020-11989
MD5 | d99b67e87de86e39e67a7473af9d2565

Ubuntu Security Notice USN-4740-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4740-1
February 18, 2021

shiro vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Apache Shiro could be made to crash if it received specially crafted
input.

Software Description:
- shiro: Powerful and easy-to-use Java security framework

Details:

It was discovered that Apache Shiro mishandled specially crafted requests. An
attacker could use this vulnerability to bypass authentication mechanisms.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
libshiro-java 1.3.2-4ubuntu0.1

Ubuntu 18.04 LTS:
libshiro-java 1.3.2-3~18.04.1

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4740-1
CVE-2020-11989, CVE-2020-1957

Package Information:
https://launchpad.net/ubuntu/+source/shiro/1.3.2-4ubuntu0.1
https://launchpad.net/ubuntu/+source/shiro/1.3.2-3~18.04.1
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