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  BusyBox udhcp Option Out-of-Bounds Read

Category: MISC      

An issue was discovered in BusyBox before 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP server, client, and relay) allows a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to verification in udhcp_get_option() in networking/udhcp/common.c that 4-byte options are indeed 4 bytes.

References
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20679


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