Actively exploited in the wild
Mozilla Firefox Security Feature Bypass Vulnerability
Mozilla - Firefox · Listed in the CISA KEV since 2022-05-25. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2015-4495
HighCVSS 8.8KEVSummary
Czytnik PDF w Mozilla Firefox przed wersją 39.0.3, Firefox ESR 38.x przed 38.1.1 oraz Firefox OS przed 2.2 umożliwia zdalnym atakującym obejście polityki Same Origin, co pozwala na odczyt dowolnych plików lub uzyskanie uprawnień poprzez wykorzystanie spreparowanego kodu JavaScript i natywnego setter'a.
Risk Assessment
Organizacje mogą być narażone na nieautoryzowany dostęp do poufnych danych oraz potencjalne eskalacje uprawnień, co może prowadzić do poważnych naruszeń bezpieczeństwa.
Recommendation
Zaleca się aktualizację przeglądarki Mozilla Firefox do najnowszej wersji, aby zniwelować ryzyko związane z tą podatnością.
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Original NVD description (English source)
The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypass the Same Origin Policy, and read arbitrary files or gain privileges, via vectors involving crafted JavaScript code and a native setter, as exploited in the wild in August 2015.