CVE-2023-32322 Arbitrary file read in Ombi
Administrative users can read arbitrary files on the host system via path traversal in log endpoints, potentially exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-32322?
CVE-2023-32322 is a medium-severity path traversal vulnerability in Ombi-app Ombi, published on 18 May 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Ombi is an open source application which allows users to request specific media from popular self-hosted streaming servers. Versions prior to 4.38.2 contain an arbitrary file read vulnerability where an Ombi administrative user may access files available to the Ombi server process on the host operating system. Ombi administrators may not always be local system administrators and so this may violate the security expectations of the system. The arbitrary file read vulnerability was present in `ReadLogFile` and `Download` endpoints in `SystemControllers.cs` as the parameter `logFileName` is not sanitized before being combined with the `Logs` directory. When using `Path.Combine(arg1, arg2, arg3)`, an attacker may be able to escape to folders/files outside of `Path.Combine(arg1, arg2)` by using ".." in `arg3`. In addition, by specifying an absolute path for `arg3`, `Path.Combine` will completely ignore the first two arguments and just return just `arg3`. This vulnerability can lead to information disclosure. The Ombi `documentation` suggests running Ombi as a Service with Administrator privileges. An attacker targeting such an application may be able to read the files of any Windows user on the host machine and certain system files. This issue has been addressed in commit `b8a8f029` and in release version 4.38.2. Users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as GHSL-2023-088.
Weakness: CWE-22
Which versions are affected by CVE-2023-32322?
It affects 1 product.
Products include Ombi Ombi.
How do I fix CVE-2023-32322?
No fix has been published for CVE-2023-32322 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2023-32322 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-32322 exists.
Sources
Also known as GHSA-28j3-84m7-gpjp.