CVE-2020-7663

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.

References

Affected packages

Git / github.com/faye/websocket-extensions-ruby

Affected ranges

Type: GIT
Repo: https://github.com/faye/websocket-extensions-ruby
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

aa156a439da681361ed6f53f1a8131892418838b

Type: GIT
Repo: https://github.com/faye/websocket-extensions-ruby
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

aa156a439da681361ed6f53f1a8131892418838b

Affected versions

0.*

0.1.0

0.1.1

0.1.2

0.1.3

0.1.4

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-7663.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "0.1.5"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "9.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "16.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "18.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "20.04"
            }
        ]
    }
]