CVE-2006-4572
HighSummary
ip6_tables w netfilter w jądrze Linux przed wersją 2.6.16.31 pozwala zdalnym atakującym na obejście reguły, która zabrania określonego protokołu, poprzez pakiet z nagłówkiem protokołu nie znajdującym się bezpośrednio po nagłówku fragmentu. Dodatkowo, możliwe jest obejście reguły poszukującej określonego nagłówka rozszerzenia, poprzez pakiet z nagłówkiem rozszerzenia znajdującym się poza pierwszym fragmentem.
Risk Assessment
Organizacja może być narażona na ataki, które wykorzystują te luki do omijania zabezpieczeń, co może prowadzić do nieautoryzowanego dostępu do systemów lub danych. W konsekwencji, może to skutkować poważnymi naruszeniami bezpieczeństwa.
Recommendation
Zaleca się aktualizację jądra Linux do wersji 2.6.16.31 lub nowszej, aby usunąć te podatności. Dodatkowo, warto przeprowadzić audyt reguł zapory sieciowej w celu zapewnienia ich skuteczności.
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Original NVD description (English source)
ip6_tables in netfilter in the Linux kernel before 2.6.16.31 allows remote attackers to (1) bypass a rule that disallows a protocol, via a packet with the protocol header not located immediately after the fragment header, aka "ip6_tables protocol bypass bug;" and (2) bypass a rule that looks for a certain extension header, via a packet with an extension header outside the first fragment, aka "ip6_tables extension header bypass bug."
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

