CVE-2025-20239
HighSummary
Podatność w funkcji IKEv2 oprogramowania Cisco IOS, IOS XE, ASA oraz FTD może umożliwić nieautoryzowanemu, zdalnemu atakującemu wywołanie wycieku pamięci, co prowadzi do stanu odmowy usługi (DoS). Atakujący może wykorzystać tę podatność, wysyłając spreparowane pakiety IKEv2 do podatnego urządzenia.
Risk Assessment
Ryzyko dla organizacji polega na możliwości wywołania niestabilności systemu oraz odmowy usługi, co może prowadzić do przerwania działania VPN i wymagać ręcznego restartu urządzenia.
Recommendation
Zaleca się aktualizację oprogramowania do najnowszej wersji, aby załatać tę podatność oraz monitorowanie ruchu IKEv2 w celu wykrycia potencjalnych prób ataku.
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Original NVD description (English source)
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appliance (ASA) Software, and Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a memory leak, resulting in a denial of service (DoS) condition. This vulnerability is due to a lack of proper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. In the case of Cisco IOS and IOS XE Software, a successful exploit could allow the attacker to cause the device to reload unexpectedly. In the case of Cisco ASA and FTD Software, a successful exploit could allow the attacker to partially exhaust system memory, causing system instability such as being unable to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.

