Vulnetix
Try Vulnetix Request Demo
CVE-2020-7663 PUBLISHED

websocket-extensions ruby module prior to 0.1.5 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.

EPSS 2.42% · 85.0th percentile

Risk Scores

EPSS Score
2.42%
85.0th percentile

Affected Products

VendorProductVersions
Ubuntu:18.04:LTSruby-websocket-extensions0, 0.1.2-1
Ubuntu:16.04:LTSruby-websocket-extensions0, 0.1.2-1
Ubuntu:20.04:LTSruby-websocket-extensions0, 0.1.2-1

Timeline

References

Open in Interactive Console →