CVE-2021-21249: fallo crítico en theonedev onedev
Post-Auth Unsafe Yaml deserialization
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
28Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 9.6epss 3.1%
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
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Productos afectados
theonedev · onedevCVEs relacionadas — theonedev onedev
En el mismo producto, de las más peligrosas a las menos.
CVE-2021-21242CRITICALPre-Auth Unsafe Deserialization on AttachmentUploadServetEPSS 74.2%CVE-2021-21243CRITICALPre-Auth Unsafe Deserialization on KubernetesResourceEPSS 54.5%CVE-2021-21246HIGHPre-Auth Access token leakEPSS 49.1%CVE-2024-45309HIGHOneDev vulnerable to arbitrary file reading for unauthenticated userEPSS 24.5%CVE-2021-21251HIGHZipSlip Arbitrary File UploadEPSS 12.7%CVE-2022-39205CRITICALAccess Control Bypass in OnedevEPSS 2.5%