Dproxy Security Vulnerabilities

CVE-2024-2169

Implementations of UDP application protocol are vulnerable to network loops. An unauthenticated attacker can use maliciously-crafted packets against a vulnerable implementation that can lead to Denial of Service (DOS) and/or abuse of...

CVE-2022-33991

dproxy-nexgen (aka dproxy nexgen) forwards and caches DNS queries with the CD (aka checking disabled) bit set to 1. This leads to disabling of DNSSEC protection provided by upstream...

CVE-2022-33989

dproxy-nexgen (aka dproxy nexgen) uses a static UDP source port (selected randomly only at boot time) in upstream queries sent to DNS resolvers. This allows DNS cache poisoning because there is not enough entropy to prevent traffic injection...

CVE-2022-33990

Misinterpretation of special domain name characters in dproxy-nexgen (aka dproxy nexgen) leads to cache poisoning because domain names and their associated IP addresses are cached in their misinterpreted...

CVE-2022-33988

dproxy-nexgen (aka dproxy nexgen) re-uses the DNS transaction id (TXID) value from client queries, which allows attackers (able to send queries to the resolver) to conduct DNS cache-poisoning attacks because the TXID value is known to the...

CVE-2007-1866

Stack-based buffer overflow in the dns_decode_reverse_name function in dns_decode.c in dproxy-nexgen allows remote attackers to execute arbitrary code by sending a crafted packet to port 53/udp, a different issue than...

CVE-2007-1465

Stack-based buffer overflow in dproxy.c for dproxy 0.1 through 0.5 allows remote attackers to execute arbitrary code via a long DNS query packet to UDP port...