CVE-2026-33002
HighSummary
Jenkins w wersjach od 2.442 do 2.554 oraz LTS od 2.426.3 do 2.541.2 wykonuje walidację pochodzenia żądań przez punkt końcowy WebSocket CLI, porównując oczekiwane pochodzenie z nagłówkami HTTP Host lub X-Forwarded-Host. To sprawia, że jest podatny na ataki DNS rebinding, które mogą umożliwić ominięcie walidacji pochodzenia.
Risk Assessment
Atakujący może wykorzystać tę podatność do przeprowadzenia ataków DNS rebinding, co może prowadzić do nieautoryzowanego dostępu do zasobów wewnętrznych organizacji. To stwarza poważne ryzyko dla bezpieczeństwa danych i systemów.
Recommendation
Zaleca się aktualizację Jenkins do najnowszej wersji, aby usunąć tę podatność. Dodatkowo, warto rozważyć wprowadzenie dodatkowych środków zabezpieczających, takich jak ograniczenie dostępu do punktów końcowych WebSocket.
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Original NVD description (English source)
Jenkins 2.442 through 2.554 (both inclusive), LTS 2.426.3 through LTS 2.541.2 (both inclusive) performs origin validation of requests made through the CLI WebSocket endpoint by computing the expected origin for comparison using the Host or X-Forwarded-Host HTTP request headers, making it vulnerable to DNS rebinding attacks that allow bypassing origin validation.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

