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AUSCERT External Security Bulletin Redistribution
ESB-2021.0622
USN-4740-1: Apache Shiro vulnerabilities
19 February 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Apache Shiro
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-11989 CVE-2020-1957
Reference: ESB-2020.4464
ESB-2020.2334
ESB-2020.1370
Original Bulletin:
https://ubuntu.com/security/notices/USN-4740-1
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USN-4740-1: Apache Shiro vulnerabilities
18 February 2021
Apache Shiro could be made to crash if it received specially crafted
input.
Releases
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o 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
o libshiro-java - 1.3.2-4ubuntu0.1
Ubuntu 18.04
o libshiro-java - 1.3.2-3~18.04.1
In general, a standard system update will make all the necessary changes.
References
o CVE-2020-1957
o CVE-2020-11989
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