OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is an issue involving YAML parsing which can lead to post-auth remote code execution. In order to parse and process YAML files, OneDev uses SnakeYaml which by default (when not using `SafeConstructor`) allows the instantiation of arbitrary classes. We can leverage that to run arbitrary code by instantiating classes such as `javax.script.ScriptEngineManager` and using `URLClassLoader` to load the script engine provider, resulting in the instantiation of a user controlled class. For a full example refer to the referenced GHSA. This issue was addressed in 4.0.3 by only allowing certain known classes to be deserialized
References
Link | Resource |
---|---|
https://github.com/theonedev/onedev/commit/d6fc4212b1ac1e9bbe3ce444e95f9af1e3ab8b66 | Patch Third Party Advisory |
https://github.com/theonedev/onedev/security/advisories/GHSA-7xhq-m2q9-6hpm | Third Party Advisory |
Configurations
History
26 Apr 2022, 16:13
Type | Values Removed | Values Added |
---|---|---|
CWE | CWE-502 |
21 Jan 2021, 14:28
Type | Values Removed | Values Added |
---|---|---|
References | (MISC) https://github.com/theonedev/onedev/commit/d6fc4212b1ac1e9bbe3ce444e95f9af1e3ab8b66 - Patch, Third Party Advisory | |
References | (CONFIRM) https://github.com/theonedev/onedev/security/advisories/GHSA-7xhq-m2q9-6hpm - Third Party Advisory | |
CPE | cpe:2.3:a:onedev_project:onedev:*:*:*:*:*:*:*:* | |
CVSS |
v2 : v3 : |
v2 : 6.5
v3 : 8.8 |
15 Jan 2021, 21:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2021-01-15 21:15
Updated : 2023-12-10 13:41
NVD link : CVE-2021-21249
Mitre link : CVE-2021-21249
CVE.ORG link : CVE-2021-21249
JSON object : View
Products Affected
onedev_project
- onedev