CVE-2011-2993
HighSummary
Implementacja podpisów cyfrowych dla plików JAR w Mozilla Firefox 4.x do 5 oraz SeaMonkey 2.x przed wersją 2.3 nie zapobiega wywołaniom z niezapisanych kodów JavaScript do kodów podpisanych. To umożliwia zdalnym atakującym obejście polityki tego samego pochodzenia i uzyskanie uprawnień poprzez spreparowaną stronę internetową.
Risk Assessment
Organizacja może być narażona na ataki, które wykorzystują tę lukę do uzyskania nieautoryzowanego dostępu do zasobów. Atakujący mogą wykorzystać tę podatność do przeprowadzenia działań szkodliwych na systemach użytkowników.
Recommendation
Zaleca się aktualizację przeglądarek do najnowszych wersji, które zawierają poprawki zabezpieczeń. Należy również monitorować i ograniczać dostęp do stron internetowych, które mogą być potencjalnie złośliwe.
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Original NVD description (English source)
The implementation of digital signatures for JAR files in Mozilla Firefox 4.x through 5, SeaMonkey 2.x before 2.3, and possibly other products does not prevent calls from unsigned JavaScript code to signed code, which allows remote attackers to bypass the Same Origin Policy and gain privileges via a crafted web site, a different vulnerability than CVE-2008-2801.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

