CVE-2026-32771
CriticalSummary
Komponent monitorowania CTFer.io odpowiada za zbieranie, przetwarzanie i przechowywanie różnych sygnałów, takich jak logi, metryki i rozproszone ślady. W wersjach przed 0.2.2 funkcja sanitizeArchivePath jest podatna na atak typu Path Traversal, co pozwala na dowolne zapisywanie plików, w tym nadpisywanie konfiguracji powłoki, kluczy SSH, kubeconfig czy crontabów.
Risk Assessment
Podatność ta umożliwia zdalne wykonanie kodu (RCE) oraz tworzenie trwałych backdoorów, co stanowi poważne zagrożenie dla bezpieczeństwa systemu. Dodatkowo, domyślny tryb dostępu ReadWriteMany dla PVC zwiększa ryzyko, umożliwiając każdemu podowi w klastrze wstrzykiwanie złośliwego ładunku.
Recommendation
Zaleca się aktualizację do wersji 0.2.2 lub nowszej, aby usunąć tę podatność. Należy również rozważyć ograniczenie dostępu do PVC oraz monitorowanie aktywności w klastrze w celu wykrycia potencjalnych ataków.
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Original NVD description (English source)
The CTFer.io Monitoring component is in charge of the collection, process and storage of various signals (i.e. logs, metrics and distributed traces). In versions prior to 0.2.2, the sanitizeArchivePath function in pkg/extract/extract.go (lines 248–254) is vulnerable to Path Traversal due to a missing trailing path separator in the strings.HasPrefix check. The extractor allows arbitrary file writes (e.g., overwriting shell configs, SSH keys, kubeconfig, or crontabs), enabling RCE and persistent backdoors. The attack surface is further amplified by the default ReadWriteMany PVC access mode, which lets any pod in the cluster inject a malicious payload. This issue has been fixed in version 0.2.2.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS