4.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
6.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
51.0%
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.
docs.ombi.app/guides/installation/#windows
github.com/Ombi-app/Ombi/blob/v4.36.1/src/Ombi/Controllers/V2/SystemController.cs#L46
github.com/Ombi-app/Ombi/blob/v4.36.1/src/Ombi/Controllers/V2/SystemController.cs#L58
github.com/Ombi-app/Ombi/commit/b8a8f029d80454d582bc4a2a05175106809335d0
github.com/Ombi-app/Ombi/security/advisories/GHSA-28j3-84m7-gpjp
4.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
6.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
51.0%