com.google.guava:guava Dependency in Confluence Data Center and Server

This High severity com.google.guava:guava Dependency vulnerability was introduced in versions 4.0 of Confluence Data Center and Server.

This com.google.guava:guava Dependency vulnerability, with a CVSS Score of 7.1 and a CVSS Vector of CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N allows an authenticated attacker to expose assets in your environment susceptible to exploitation which has high impact to confidentiality, high impact to integrity, no impact to availability, and requires no user interaction.
h2. Data Center

Atlassian recommends that Confluence Data Center customers upgrade to the latest version. If you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
||Affected versions||Fixed versions||
|from 8.7.0 to 8.7.1|8.8.0 recommended or 8.7.1 or 8.7.2|
|from 8.6.0 to 8.6.2|8.8.0 recommended or 8.6.1 or 8.6.2|
|from 8.5.0 to 8.5.3 LTS|8.8.0 recommended or 8.5.4 LTS or 8.5.5 LTS or 8.5.6 LTS|
|from 8.4.0 to 8.4.5|8.8.0 recommended or 8.5.6 LTS|
|from 8.3.0 to 8.3.4|8.8.0 recommended or 8.5.6 LTS|
|from 8.2.0 to 8.2.3|8.8.0 recommended or 8.5.6 LTS|
|from 8.1.0 to 8.1.4|8.8.0 recommended or 8.5.6 LTS|
|from 8.0.0 to 8.0.4|8.8.0 recommended or 8.5.6 LTS|
|from 7.20.0 to 7.20.3|8.8.0 recommended or 8.5.6 LTS|
|from 7.19.0 to 7.19.18 LTS|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|
|from 7.18.0 to 7.18.3|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|
|from 7.17.0 to 7.17.5|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|
|Any earlier versions|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|
h2. Server

Atlassian recommends that Confluence Server customers upgrade to the latest 8.5.x LTS version. If you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
||Affected versions||Fixed versions||
|from 8.5.0 to 8.5.3 LTS|8.5.6 LTS recommended or 8.5.5 LTS or 8.5.4 LTS|
|from 8.4.0 to 8.4.5|8.5.6 LTS recommended|
|from 8.3.0 to 8.3.4|8.5.6 LTS recommended|
|from 8.2.0 to 8.2.3|8.5.6 LTS recommended|
|from 8.1.0 to 8.1.4|8.5.6 LTS recommended|
|from 8.0.0 to 8.0.4|8.5.6 LTS recommended|
|from 7.20.0 to 7.20.3|8.5.6 LTS recommended|
|from 7.19.0 to 7.19.18 LTS|8.5.6 LTS recommended or 7.19.19 LTS|
|from 7.18.0 to 7.18.3|8.5.6 LTS recommended or 7.19.19 LTS|
|from 7.17.0 to 7.17.5|8.5.6 LTS recommended or 7.19.19 LTS|
|Any earlier versions|8.5.6 LTS recommended or 7.19.19 LTS|

See the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center and Server from the download center ([https://www.atlassian.com/software/confluence/download-archives]).

The National Vulnerability Database provides the following description for this vulnerability: Use of Java’s default temporary directory for file creation in FileBackedOutputStream in Google Guava versions 1.0 to 31.1 on Unix systems and Android Ice Cream Sandwich allows other users and apps on the machine with access to the default Java temporary directory to be able to access the files created by the class.

Even though the security vulnerability is fixed in version 32.0.0, we recommend using version 32.0.1 as version 32.0.0 breaks some functionality under Windows.