CVE-2018-5732: falha de alta gravidade em ISC DHCP
A specially constructed response from a malicious server can cause a buffer overflow in dhclient
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.5epss 5.2%
Failure to properly bounds-check a buffer used for processing DHCP options allows a malicious server (or an entity masquerading as a server) to cause a buffer overflow (and resulting crash) in dhclient by sending a response containing a specially constructed options section. Affects ISC DHCP versions 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Produtos afetados
ISC · ISC DHCPCVEs relacionadas — ISC DHCP
No mesmo produto, das mais perigosas para as menos.
CVE-2017-3144MEDIUMFailure to properly clean up closed OMAPI connections can exhaust available socketsEPSS 72.7%CVE-2018-5733MEDIUMA malicious client can overflow a reference counter in ISC dhcpdEPSS 20.2%CVE-2021-25217HIGHA buffer overrun in lease file parsing code can be used to exploit a common vulnerability shared by dhcpd and dhclientEPSS 6.1%CVE-2022-2928MEDIUMAn option refcount overflow exists in dhcpdEPSS 0.7%CVE-2022-2929MEDIUMDHCP memory leakEPSS 0.7%
Referências
https://kb.isc.org/docs/aa-01565