Jenkins Convert To Pipeline Plugin 1.0 and earlier uses basic string concatenation to convert Freestyle projects' Build Environment, Build Steps, and Post-build Actions to the equivalent Pipeline step invocations.
This allows attackers able to configure Freestyle projects to prepare a crafted configuration that injects Pipeline script code into the (unsandboxed) Pipeline resulting from a conversion by Convert To Pipeline Plugin. If an administrator converts the Freestyle project to a Pipeline, the script will be pre-approved.
{
"github_reviewed_at": "2023-04-04T17:11:17Z",
"nvd_published_at": "2023-04-02T21:15:00Z",
"github_reviewed": true,
"cwe_ids": [
"CWE-77"
],
"severity": "HIGH"
}