CVE-2023-0026
HighSummary
Podatność związana z niewłaściwą walidacją danych wejściowych w demonie protokołu routingu (rpd) systemu Junos OS firmy Juniper Networks pozwala nieautoryzowanemu atakującemu zdalnemu na spowodowanie odmowy usługi (DoS). Problem występuje, gdy wiadomość aktualizacji BGP zawiera określony, opcjonalny atrybut transytywny, co prowadzi do zerwania sesji BGP.
Risk Assessment
Atakujący może zdalnie wykorzystać tę podatność do ciągłego wysyłania wiadomości aktualizacji BGP, co prowadzi do trwałej odmowy usługi. Problem ten nie rozprzestrzenia się poza dotknięty system, ale może wpływać na inne systemy pośrednie.
Recommendation
Zaleca się wdrożenie dostępnych obejść oraz monitorowanie sesji BGP w celu wykrywania i zapobiegania atakom DoS. Należy również śledzić aktualizacje od Juniper SIRT w celu zastosowania poprawek, gdy będą dostępne.
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Original NVD description (English source)
An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When a BGP update message is received over an established BGP session, and that message contains a specific, optional transitive attribute, this session will be torn down with an update message error. This issue cannot propagate beyond an affected system as the processing error occurs as soon as the update is received. This issue is exploitable remotely as the respective attribute can propagate through unaffected systems and intermediate AS (if any). Continuous receipt of a BGP update containing this attribute will create a sustained Denial of Service (DoS) condition. Some customers have experienced these BGP session flaps which prompted Juniper SIRT to release this advisory out of cycle before fixed releases are widely available as there is an effective workaround. This i
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

