CVE-2011-2561
HighSummary
Proces SIP w Cisco Unified Communications Manager (CUCM) w wersjach 7.x przed 7.1(5b)su4 oraz 8.x przed 8.0(1) nieprawidłowo obsługuje dane SDP w trakcie połączenia SIP w określonych sytuacjach związanych z użyciem kodeka g729ar8 dla Punktu Zakończenia Mediów (MTP). To może umożliwić zdalnym atakującym spowodowanie awarii usługi poprzez odpowiednio przygotowane połączenie.
Risk Assessment
Organizacja może doświadczyć przerwy w świadczeniu usług komunikacyjnych, co może prowadzić do zakłóceń w działalności operacyjnej. Atakujący mogą wykorzystać tę podatność do przeprowadzenia ataków typu denial of service.
Recommendation
Zaleca się aktualizację Cisco Unified Communications Manager do wersji 7.1(5b)su4 lub 8.0(1) lub nowszej, aby usunąć tę podatność. Dodatkowo, monitorowanie ruchu SIP w celu wykrywania podejrzanych połączeń może pomóc w minimalizacji ryzyka.
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Original NVD description (English source)
The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x before 7.1(5b)su4 and 8.x before 8.0(1) does not properly handle SDP data within a SIP call in certain situations related to use of the g729ar8 codec for a Media Termination Point (MTP), which allows remote attackers to cause a denial of service (service outage) via a crafted call, aka Bug ID CSCtc61990.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

