PT-2020-8903

Name of the Vulnerable Software and Affected Versions Mattermost Server versions prior to 4.8.1 Mattermost Server versions prior to 4.7.4 Mattermost Server versions prior to 4.6.3 Description An issue was discovered in Mattermost Server where WebSocket events were accidentally sent during certain...

CVE-2020-14457: Undefined Security Weakness

An issue was discovered in Mattermost Server before 5.20.0. Non-members can receive broadcasted team details via the updateteam WebSocket event, aka MMSA-2020-0012...

CVE-2019-20847: Undefined Security Weakness

An issue was discovered in Mattermost Server before 5.18.0. An attacker can send a usertyping WebSocket event to any channel...

CVE-2018-21260: Exposure of Sensitive Information to an Unauthorized Actor

An issue was discovered in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3. WebSocket events were accidentally sent during certain user-management operations, violating user privacy...

CVE-2016-11065: Incorrect Permission Assignment for Critical Resource

An issue was discovered in Mattermost Server before 3.3.0. An attacker could use the WebSocket feature to send pop-up messages to users or change a post's appearance...

CVE-2017-18920: Undefined Security Weakness

An issue was discovered in Mattermost Server before 3.6.2. The WebSocket feature does not follow the Same Origin Policy...

PT-2020-14017 · Mattermost · Mattermost Server

Name of the Vulnerable Software and Affected Versions: Mattermost Server versions prior to 5.20.0 Description: An issue was discovered in Mattermost Server where non-members can receive broadcasted team details via the update team WebSocket event. Recommendations: For versions prior to 5.20.0,...

PT-2020-10810

Name of the Vulnerable Software and Affected Versions Mattermost Server versions prior to 5.18.0 Description An issue allows an attacker to send a user typing WebSocket event to any channel. Recommendations For versions prior to 5.18.0, update to version 5.18.0 or later to resolve the issue...

LibVNCServer Buffer Overflow Vulnerability (CNVD-2020-36781)

LibVNCServer is a cross-platform C library that supports the implementation of VNC Virtual Network Computing server or client functionality in programs. A security vulnerability exists in the 'hybiReadAndDecode' function in the libvncserver/wsdecode.c file in versions of LibVNCServer prior to...

UBUNTU-CVE-2019-20840

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/wsdecode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode...

Websocket Extensions Denial of Service (CVE-2020-7662; CVE-2020-7663)

A denial-of-service vulnerability exists in Websocket Extensions. Successful exploitation of this vulnerability could cause a denial-of-service condition...

CVE-2020-7663

A flaw was found in the websocket-extensions ruby module in versions prior to 0.1.5. The parser may take quadratic time when parsing a header containing an unclosed string parameter value whose content is a repeating two-byte sequence of a backslash and another character. When abused by an...

Information Disclosure

apollo-server-cloudflare is vulnerable to information leakage. Lack of validation rules enforcement during the subscription server creation with NoInstrospection rule for websockets exposes GraphQL schema types, their relations, human-readable names and many More information on the references...

Information Exposure

Overview Versions of apollo-server-koa prior to 2.14.2 are vulnerable to Information Exposure. The package does not properly enforce validation rules when creating subscription servers, which includes a NoInstrospection rule for the Websocket. This leaks the GraphQL schema types, their relations...

Information Exposure

Overview Versions of apollo-server-hapi prior to 2.14.2 are vulnerable to Information Exposure. The package does not properly enforce validation rules when creating subscription servers, which includes a NoInstrospection rule for the Websocket. This leaks the GraphQL schema types, their relations...

Information Exposure

Overview Versions of apollo-server-fastify prior to 2.14.2 are vulnerable to Information Exposure. The package does not properly enforce validation rules when creating subscription servers, which includes a NoInstrospection rule for the Websocket. This leaks the GraphQL schema types, their...

Information Exposure

Overview Versions of apollo-server-cloud-functions prior to 2.14.2 are vulnerable to Information Exposure. The package does not properly enforce validation rules when creating subscription servers, which includes a NoInstrospection rule for the Websocket. This leaks the GraphQL schema types, thei...

Introspection in schema validation in Apollo Server

We encourage all users of Apollo Server to read this advisory in its entirety to understand the impact. The Resolution section contains details on patched versions. Impact If subscriptions: false is passed to the ApolloServer constructor options, there is no impact. If implementors were not...

GHSA-G78M-2CHM-R7QV Regular Expression Denial of Service in websocket-extensions (NPM package)

Impact The ReDoS flaw allows an attacker to exhaust the server's capacity to process incoming requests by sending a WebSocket handshake request containing a header of the following form: Sec-WebSocket-Extensions: a; b="\c\c\c\c\c\c\c\c\c\c ... That is, a header containing an unclosed string...

Regular Expression Denial of Service in websocket-extensions (NPM package)

Impact The ReDoS flaw allows an attacker to exhaust the server's capacity to process incoming requests by sending a WebSocket handshake request containing a header of the following form: Sec-WebSocket-Extensions: a; b="\c\c\c\c\c\c\c\c\c\c ... That is, a header containing an unclosed string...