cve/2020/CVE-2020-7461.md

CVE-2020-7461

Description

In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient(8) fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle be exploited to achieve remote code execution. The affected process runs with reduced privileges in a Capsicum sandbox, limiting the immediate impact of an exploit.

POC

Reference

No PoCs from references.

Github

• https://github.com/0xkol/freebsd-dhclient-poc
• https://github.com/ARPSyndicate/cvemon
• https://github.com/knqyf263/CVE-2020-7461
• https://github.com/nomi-sec/PoC-in-GitHub
• https://github.com/soosmile/POC