cve/2019/CVE-2019-5747.md

CVE-2019-5747

Description

An issue was discovered in BusyBox through 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP client, server, and/or relay) might allow a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to assurance of a 4-byte length when decoding DHCP_SUBNET. NOTE: this issue exists because of an incomplete fix for CVE-2018-20679.

POC

Reference

• http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
• http://seclists.org/fulldisclosure/2019/Sep/7
• https://seclists.org/bugtraq/2019/Sep/7

Github

• https://github.com/ARPSyndicate/cvemon