CVE-2026-32945
CriticalSummary
PJSIP to darmowa i otwarta biblioteka komunikacji multimedialnej napisana w C. Wersje 2.16 i poniżej mają podatność na przepełnienie bufora w sterowniku długości nazwy analizatora DNS, co wpływa na aplikacje korzystające z wbudowanego resolvera DNS PJSIP.
Risk Assessment
Organizacje korzystające z PJSIP mogą być narażone na ataki, które mogą prowadzić do nieautoryzowanego dostępu lub awarii aplikacji. Użytkownicy, którzy nie skonfigurowali resolvera DNS, nie są dotknięci tą podatnością.
Recommendation
Zaleca się aktualizację do wersji 2.17, w przeciwnym razie można wyłączyć rozwiązywanie DNS w konfiguracji PJSIP lub użyć zewnętrznej implementacji resolvera.
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Original NVD description (English source)
PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a Heap-based Buffer Overflowvulnerability in the DNS parser's name length handler. Thisimpacts applications using PJSIP's built-in DNS resolver, such as those configured with pjsua_config.nameserver or UaConfig.nameserver in PJSUA/PJSUA2. It does not affect users who rely on the OS resolver (e.g., getaddrinfo()) by not configuring a nameserver, or those using an external resolver via pjsip_resolver_set_ext_resolver(). This issue is fixed in version 2.17. For users unable to upgrade, a workaround is to disable DNS resolution in the PJSIP config (by setting nameserver_count to zero) or to use an external resolver implementation instead.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS