Security Advisory 2022-12
| Summary | ReDoS in Build Information request (CVE-2022-2075) |
| Advisory Number | 2022-12 |
| Discovery Date | 06 Jun 2022 |
| Patch Release Date | 21 Jun 2022 |
| Advisory Release Date | 19 Aug 2022 |
| Product | Octopus Server |
| Operating System | Linux and Microsoft Windows |
| Severity | Medium |
| CVE ID | CVE-2022-2075 |
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 2022.2.6872 or higher are not affected.
Severity
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.
Details
In affected versions of Octopus Deploy it is possible to perform a Regex Denial of Service targeting the build information request validation. When performed successfully, this results in Octopus Server becoming unresponsive due to excessive CPU usage.
The versions of Octopus Server affected by this vulnerability are:
- All 0.x.x, 1.x.x, 2.x.x, 3.x.x, 4.x.x versions
- All 2018.x, 2019.x, 2020.x, 2021.x versions
- All 2022.1.x versions before 2022.1.2894
- All 2022.2.x versions before 2022.2.6872
- All 2022.3.x versions before 2022.3.4953
As of the 19/08/2022 Octopus Server version 2022.3.x is only available on Octopus Cloud.
Fix
To address this vulnerability, we have released Octopus Server version:
- 2022.1.2894
- 2022.2.6872
- 2022.3.4953
The latest versions of Octopus Deploy products can be downloaded from https://octopus.com/downloads and previous versions can be downloaded from https://octopus.com/downloads/previous
What You Need to Do
Octopus Deploy recommends that you upgrade to the latest version (2022.2.6872). You can download the latest version of Octopus Server from https://octopus.com/downloads
If you can't upgrade to the latest version (2022.2.6872):
| If you have feature version... | ...then upgrade to this version |
|---|---|
| 0.x.x, 1.x.x, 2.x.x, 3.x.x, 4.x.x | 2022.1.2894 or greater |
| 2018.x, 2019.x, 2020.x, 2021.x | 2022.1.2894 or greater |
| 2022.1.x | 2022.1.2894 or greater |
| 2022.2.x | 2022.2.6872 or greater |
| 2022.3.x | 2022.3.4953 or greater |
Mitigation
There is no known mitigation for CVE-2022-2075, it is important to upgrade to a fixed version as soon as possible.
Support
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.
Source
This vulnerability was found by Bartłomiej Górkiewicz