OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service when receiving malformed IPv6 packet.

OpenVPN Access Server 2.7.3 to 2.8.7 allows remote attackers to trigger an assert during the user authentication phase via incorrect authentication token data in an early phase of the user authentication resulting in a denial of service.

OpenVPN 2.x before 2.0.4, when running in TCP mode, allows remote attackers to cause a denial of service (segmentation fault) by forcing the accept function call to return an error status, which leads to a null dereference in an exception handler.

OpenVPN before 2.0.1, when running with "verb 0" and without TLS authentication, does not properly flush the OpenSSL error queue when a client fails certificate authentication to the server and causes the error to be processed by the wrong client, which allows remote attackers to cause a denial of service (client disconnection) via a large number of failed authentication attempts.

OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack.

OpenVPN before 2.0.1 does not properly flush the OpenSSL error queue when a packet can not be decrypted by the server, which allows remote authenticated attackers to cause a denial of service (client disconnection) via a large number of packets that can not be decrypted.

OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character.

OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.

The compressed packet parser in GnuPG 1.4.x before 1.4.15 and 2.0.x before 2.0.22 allows remote attackers to cause a denial of service (infinite recursion) via a crafted OpenPGP message.

ns-slapd in 389 Directory Server before 1.3.0.8 allows remote attackers to cause a denial of service (server crash) via a crafted Distinguished Name (DN) in a MOD operation request.

Cryptocat before 2.0.22 has Remote Denial of Service via username

Multiple array index errors in epan/dissectors/packet-gsm_a_common.c in the GSM A Common dissector in Wireshark 1.8.x before 1.8.9 and 1.10.x before 1.10.1 allow remote attackers to cause a denial of service (application crash) via a crafted packet.

Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py, as exploited in the wild in April 2018.

The HTTP server in Node.js 0.10.x before 0.10.21 and 0.8.x before 0.8.26 allows remote attackers to cause a denial of service (memory and CPU consumption) by sending a large number of pipelined requests without reading the response.

An input validation flaw exists in ttembed. With a crafted input file, an attacker may be able to trigger a denial of service condition due to ttembed trusting attacker controlled values.

python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in pop3lib's apop() method. An attacker could use this flaw to cause denial of service.

The (1) power and (2) ipmi_boot actions in the HostController in Foreman before 1.2.2 allow remote attackers to cause a denial of service (memory consumption) via unspecified input that is converted to a symbol.

epan/dissectors/packet-dcom-sysact.c in the DCOM ISystemActivator dissector in Wireshark 1.10.x before 1.10.1 does not properly validate certain index values, which allows remote attackers to cause a denial of service (assertion failure and application exit) via a crafted packet.

epan/dissectors/packet-dcom-sysact.c in the DCOM ISystemActivator dissector in Wireshark 1.10.x before 1.10.1 does not properly determine whether there is remaining packet data to process, which allows remote attackers to cause a denial of service (application crash) via a crafted packet.

python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in the difflib.IS_LINE_JUNK method. An attacker could use this flaw to cause denial of service.

In atomic-openshift before version 3.10.9 a malicious network-policy configuration can cause Openshift Routing to crash when using ovs-networkpolicy plugin. An attacker can use this flaw to cause a Denial of Service (DoS) attack on an Openshift 3.9, or 3.7 Cluster.

packets.c in Freeciv 2.0 before 2.0.8 allows remote attackers to cause a denial of service (server crash) via crafted packets with negative compressed size values.

There is an Assertion 'ecma_is_lexical_environment (object_p)' failed at /base/ecma-helpers.c(ecma_get_lex_env_type) in JerryScript 3.0.0.

An issue was discovered on KONE Group Controller (KGC) devices before 4.6.5. Denial of Service can occur through the open HTTP interface, aka KONE-04.

epan/dissectors/packet-rdp.c in the RDP dissector in Wireshark 1.8.x before 1.8.8 does not validate return values during checks for data availability, which allows remote attackers to cause a denial of service (application crash) via a crafted packet.

The dissect_dvbci_tpdu_hdr function in epan/dissectors/packet-dvbci.c in the DVB-CI dissector in Wireshark 1.8.x before 1.8.9 and 1.10.x before 1.10.1 does not validate a certain length value before decrementing it, which allows remote attackers to cause a denial of service (assertion failure and application exit) via a crafted packet.

Multiple Yokogawa products that contain Vnet/IP Open Communication Driver (CENTUM CS 3000(R3.05.00 - R3.09.50), CENTUM CS 3000 Entry Class(R3.05.00 - R3.09.50), CENTUM VP(R4.01.00 - R6.03.10), CENTUM VP Entry Class(R4.01.00 - R6.03.10), Exaopc(R3.10.00 - R3.75.00), PRM(R2.06.00 - R3.31.00), ProSafe-RS(R1.02.00 - R4.02.00), FAST/TOOLS(R9.02.00 - R10.02.00), B/M9000 VP(R6.03.01 - R8.01.90)) allows remote attackers to cause a denial of service attack that may result in stopping Vnet/IP Open Communication Driver's communication via unspecified vectors.

client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header.

QXmlSimpleReader in Qt before 5.2 allows context-dependent attackers to cause a denial of service (memory consumption) via an XML Entity Expansion (XEE) attack.

A vulnerability has been identified in SIMATIC S7-1500 CPU (All versions >= V2.0 and < V2.5), SIMATIC S7-1500 CPU (All versions <= V1.8.5). Specially crafted network packets sent to port 80/tcp or 443/tcp could allow an unauthenticated remote attacker to cause a Denial-of-Service condition of the device. The security vulnerability could be exploited by an attacker with network access to the affected systems on port 80/tcp or 443/tcp. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the device. At the time of advisory publication no public exploitation of this security vulnerability was known.

In Wireshark 2.6.0, the IEEE 1905.1a dissector could crash. This was addressed in epan/dissectors/packet-ieee1905.c by making a certain correction to string handling.

A prototype pollution attack in cached-path-relative versions <=1.0.1 allows an attacker to inject properties on Object.prototype which are then inherited by all the JS objects through the prototype chain causing a DoS attack.

On BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.1, or 12.1.0-12.1.3.6, malicious requests made to virtual servers with an HTTP profile can cause the TMM to restart. The issue is exposed with the non-default "normalize URI" configuration options used in iRules and/or BIG-IP LTM policies.

An issue was discovered on Barco ClickShare CSE-200 and CS-100 Base Units with firmware before 1.6.0.3. Sending an arbitrary unexpected string to TCP port 7100 respecting a certain frequency timing disconnects all clients and results in a crash of the Unit.

A flaw in the java.math component in IBM SDK, Java Technology Edition 6.0, 7.0, and 8.0 may allow an attacker to inflict a denial-of-service attack with specially crafted String data. IBM X-Force ID: 141681.

Dell EMC Isilon OneFS versions 7.1.1.x, 7.2.1.x, 8.0.0.x, 8.0.1.x, 8.1.0.x and 8.1.x prior to 8.1.2 and Dell EMC IsilonSD Edge versions 8.0.0.x, 8.0.1.x, 8.1.0.x and 8.1.x prior to 8.1.2 contain a remote process crash vulnerability. An unauthenticated remote attacker may potentially exploit this vulnerability to crash the isi_drive_d process by sending specially crafted input data to the affected system. This process will then be restarted.

Multiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.

The fragment_add_seq_common function in epan/reassemble.c in the ASN.1 BER dissector in Wireshark before r48943 has an incorrect pointer dereference during a comparison, which allows remote attackers to cause a denial of service (application crash) via a malformed packet.

An issue was discovered in EOS.IO DAWN 4.2. plugins/net_plugin/net_plugin.cpp does not limit the number of P2P connections from the same source IP address.

This vulnerability allows remote attackers to deny service on vulnerable installations of npm mosca 2.8.1. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of topics. A crafted regular expression can cause the broker to crash. An attacker can leverage this vulnerability to deny access to the target system. Was ZDI-CAN-6306.

A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.

In Wireshark 2.6.0, 2.4.0 to 2.4.6, and 2.2.0 to 2.2.14, the LTP dissector and other dissectors could consume excessive memory. This was addressed in epan/tvbuff.c by rejecting negative lengths.

The Precision Video Engine component in Cisco Jabber for Windows and Cisco Virtualization Experience Media Engine allows remote attackers to cause a denial of service (process crash and call disconnection) via crafted RTP packets, aka Bug IDs CSCuh60706 and CSCue21117.

A vulnerability was identified in Open5GS up to 2.7.5. This vulnerability affects the function sgwc_bearer_add of the file src/sgwc/context.c. The manipulation leads to reachable assertion. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The issue report is flagged as already-fixed.

Multiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.

Multiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.

A vulnerability was determined in Open5GS up to 2.7.6. This affects the function sgwc_s11_handle_create_indirect_data_forwarding_tunnel_request of the file /src/sgwc/s11-handler.c. Executing a manipulation can lead to reachable assertion. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. The issue report is flagged as already-fixed.

A vulnerability was discovered in 389-ds-base through versions 1.3.7.10, 1.3.8.8 and 1.4.0.16. The lock controlling the error log was not correctly used when re-opening the log file in log__error_emergency(). An attacker could send a flood of modifications to a very large DN, which would cause slapd to crash.

The mk_request_header_process function in mk_request.c in Monkey 1.1.1 allows remote attackers to cause a denial of service (thread crash and service outage) via a '\0' character in an HTTP request.

An issue was discovered in the America's Army Proving Grounds platform for the Unreal Engine. With a false packet sent via UDP, the application server responds with several bytes, giving the possibility of DoS amplification, even being able to be used in DDoS attacks.