CVE-2020-7662

2020-06-0219:15:12

[email protected]

web.nvd.nist.gov

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

8.2

Confidence

High

EPSS

0.002

Percentile

60.0%

JSON

websocket-extensions npm module prior to 0.1.4 allows Denial of Service (DoS) via Regex Backtracking. The extension 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 some other character. This could be abused by an attacker to conduct Regex Denial Of Service (ReDoS) on a single-threaded server by providing a malicious payload with the Sec-WebSocket-Extensions header.

Affected configurations

Nvd

Node

websocket-extensions_projectwebsocket-extensionsRange<0.1.4node.js

VendorProductVersionCPE
websocket-extensions_projectwebsocket-extensions*cpe:2.3:a:websocket-extensions_project:websocket-extensions:*:*:*:*:*:node.js:*:*