CVE-2021-23017

CVE-2021-23017 affects nginx's resolver. A security issue arises from an off-by-one in ngx_resolver_copy when DNS labels are followed by a root-domain pointer, allowing a crafted UDP response to overwrite the least significant byte of the next heap chunk metadata. This can lead to a worker proces...

Korenix CSRF / Backdoor Accounts / Command Injection / Missing Authentication

SEC Consult Vulnerability Lab Security Advisory ======================================================================= title: Multiple Critical Vulnerabilities product: Multiple Korenix Technology products: Korenix: JetNet 5428G-20SFP, JetNet 5810G, JetNet 4706F, JetNet 4706, JetNet 4706, JetNet...

UVI-2021-1000259 udp: skip L4 aggregation for UDP tunnel packets

udp: skip L4 aggregation for UDP tunnel packets This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.4 by commit...

GSD-2021-1000107 NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds

NFS: fscontext: validate UDP retrans to prevent shift out-of-bounds This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.11.20 by commit...

UVI-2021-1000068 NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds

NFS: fscontext: validate UDP retrans to prevent shift out-of-bounds This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.3 by commit...

GSD-2021-1000259 udp: skip L4 aggregation for UDP tunnel packets

udp: skip L4 aggregation for UDP tunnel packets This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.4 by commit...

UVI-2021-1000107 NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds

NFS: fscontext: validate UDP retrans to prevent shift out-of-bounds This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.11.20 by commit...

UVI-2021-1000142 NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds

NFS: fscontext: validate UDP retrans to prevent shift out-of-bounds This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.36 by commit...

GSD-2021-1000068 NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds

NFS: fscontext: validate UDP retrans to prevent shift out-of-bounds This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.3 by commit...

Backdoor.Win32.Whirlpool.a Buffer Overflow

Discovery / credits: Malvuln - malvuln.com c 2021 Original source: https://malvuln.com/advisory/90171763d1cc62102b08482bac54ea8b.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.Whirlpool.a Vulnerability: Remote Buffer Overflow - UDP Datagram Description: The...

Input validation

radsecproxy is a generic RADIUS proxy that supports both UDP and TLS RadSec RADIUS transports. Missing input validation in radsecproxy's naptr-eduroam.sh and radsec-dynsrv.sh scripts can lead to configuration injection via crafted radsec peer discovery DNS records. Users are subject to Informatio...

CVE-2021-32642

radsecproxy is affected by CVE-2021-32642 due to missing input validation in the internal dyndisc scripts naptr-eduroam.sh and radsec-dynsrv.sh, which can allow configuration injection via crafted radsec peer discovery DNS records. reported impacts include information disclosure, DoS, and the red...

IKE / ISAKMP Service Detection (UDP)

UDP based detection of services supporting the Internet Key Exchange IKE Protocol / Internet Security Association and Key Management Protocol ISAKMP. SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respectiv...

Dnsmasq: DNS cache poisoning

Background Dnsmasq is a lightweight and easily-configurable DNS forwarder and DHCP server. Description It was discovered that Dnsmasq, when configured with --server=@ or similar e.g. through dbus, configured a fixed UDP port for all outgoing queries to the specified upstream DNS server. Impact An...

CVE-2021-23017

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact...

NGINX -- 1-byte memory overwrite in resolver

NGINX team reports: 1-byte memory overwrite might occur during DNS server response processing if the "resolver" directive was used, allowing an attacker who is able to forge UDP packets from the DNS server to cause worker process crash or, potentially, arbitrary code execution...

What is Ping of Death Assault?

Ping of death is a strategy for DoS Denial of Service assault. It’s an attack-type that objectifies the ICMP Internet Control Message Protocol and the TCP Transmission Control Protocol, and is quite possibly the most undermining of all ICMP attacks. The ping of death attack is otherwise called a...

Backdoor.Win32.Singu.a Buffer Overflow

Discovery / credits: Malvuln - malvuln.com c 2021 Original source: https://malvuln.com/advisory/c7aabf5d248c6974b4cea6c070d6d441.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.Singu.a Vulnerability: Remote Stack Buffer Overflow UDP Datagram Description: The...

kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints

A flaw was found in the Linux kernel. Traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone in between the two endpoints to read the traffic unencrypted. The main threat from this...

kernel: remote DoS in TIPC kernel module

A remote denial of service vulnerability was found in the Linux kernel’s TIPC kernel module. The while loop in tipclinkxmit hits an unknown state while attempting to parse SKBs, which are not in the queue. Sending two small UDP packets to a system with a UDP bearer results in the CPU utilization...