Jenkins 2.218 and earlier, LTS 2.204.1 and earlier does not use a constant-time comparison when checking whether two HMACs are equal. This could potentially allow attackers to use statistical methods to obtain a valid HMAC for an attacker-controlled input value.
Jenkins 2.219, LTS 2.204.2 now uses a constant-time comparison when validating HMACs.
{
"cwe_ids": [
"CWE-203",
"CWE-208"
],
"github_reviewed_at": "2022-12-19T21:06:59Z",
"nvd_published_at": "2020-01-29T16:15:00Z",
"github_reviewed": true,
"severity": "MODERATE"
}