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Published on September 7th, 2023 📆 | 5331 Views ⚑


Ubuntu Security Notice USN-6352-1 – Torchsec


Ubuntu Security Notice USN-6352-1
September 07, 2023

shiro vulnerabilities

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)


Several security issues were fixed in Apache Shiro.

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


It was discovered that Apache Shiro incorrectly handled certain HTTP
requests. A remote attacker could possibly use this issue to bypass
security restrictions. (CVE-2020-13933, CVE-2020-17510)

Update instructions:

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

Ubuntu 20.04 LTS:
libshiro-java 1.3.2-4ubuntu0.2

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libshiro-java 1.3.2-3ubuntu0.18.04.1~esm1

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

CVE-2020-13933, CVE-2020-17510

Package Information:

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