Security Advisory 2021-07
|Summary||Proxy Password Stored in Plaintext (CVE-2021-31820)|
|Discovery Date||16 Jul 2021|
|Patch Release Date||03 Aug 2021|
|Advisory Release Date||18 Aug 2021|
|Operating System||Linux and Windows|
Customers who have downloaded and installed any of the Octopus Server versions listed below ("Details") are affected.
Please upgrade your Octopus Server immediately to fix this vulnerability.
Customers who have upgraded Octopus Server to version 2021.1.7622 or higher are not affected.
Octopus Deploy has given this vulnerability a medium rating. This rating was given according to the Octopus Deploy severity levels, which ranks vulnerabilities as critical, high, medium, or low severity.
This is our assessment and you should evaluate its applicability to your own environment.
In Octopus Server after version 2018.8.2 if the Octopus Server Web Request Proxy is configured with authentication, the password is shown in plaintext in the UI.
The versions of Octopus Server affected by this vulnerability are:
All 2018.x.x versions after 2018.8.2
All 2019.x.x, 2020.1.x, 2020.2.x, 2020.3.x, 2020.4.x, 2020.5.x versions
All 2020.6.x versions before 2020.6.5310
All 2021.1.x versions before 2021.1.7622
To address this vulnerability, we have released Octopus Server versions:
What You Need to Do
Octopus Deploy recommends that you upgrade to the latest version (2021.1.7622). You can download the latest version of
If you can't upgrade to the latest version (2021.1.7622):
|If you have feature version...||...then upgrade to this version|
|2018.8.x, 2019.x.x, 2020.1.x, 2020.2.x, 2020.3.x, 2020.4.x, 2020.5.x, 2020.6.x||2020.6.5310|
There is no known mitigation for CVE-2021-31820, it is important to upgrade to a fixed version as soon as possible.
If you have any questions or concerns regarding this advisory, please contact our support team https://octopus.com/support.
Exploitation and Public Announcements
The Octopus Deploy security team is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
This vulnerability was found by an Octopus Deploy customer.