CyberRota Analysis
AI-GeneratedThe vulnerability exists in the DHCPv4 packet capture code of the wicked DHCP client, where an out-of-bounds read can occur due to incorrect handling of UDP payload lengths. This flaw allows an unauthenticated attacker on the same network to potentially read adjacent heap memory, which may expose sensitive information such as allocator metadata or pointer values. Organizations using wicked versions up to 0.6.80 should prioritize this issue, particularly those operating in environments where DHCP services are utilized.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
An out-of-bounds read was found in the DHCPv4 packet capture code of wicked. ni_capture_inspect_udp_header() in src/capture.c reports the IP total length as the payload length instead of the length of the remaining UDP payload. Consequently, the DHCP option walker in the DHCPv4 client (wickedd-dhcp4) reads up to ihl + 8 bytes — at most 68 bytes — past the end of the 1500-byte packet receive buffer. An unauthenticated attacker on the same network who sends a crafted DHCP/UDP packet can make the client parse adjacent heap memory as DHCP options, so that heap contents such as allocator metadata or pointer values can be interpreted into lease fields. The over-read is bounded to 68 bytes; no memory write, no attacker control over the adjacent bytes and no remote exfiltration primitive has been demonstrated. This issue affects wicked up to and including version 0.6.80.