CVE-2022-21716

Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as nc -rv localhost 22 < /dev/zero. A patch is available in version 22.2.0. There are currently no known workarounds.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-120"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21716.json"
}

References

Affected packages

Git / github.com/twisted/twisted

Affected ranges

Type

GIT

Repo

https://github.com/twisted/twisted

Events

Introduced

4e3b22afe1f76b360733b65d6b835b7aaae6deb6

Fixed

89c395ee794e85a9657b112c4351417850330ef9

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "22.2.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "89c395ee794e85a9657b112c4351417850330ef9"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "twisted-22.2.0",
            "range": [
                {
                    "fixed": "89c395ee794e85a9657b112c4351417850330ef9"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "cpe": "cpe:2.3:a:twisted:twisted:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "21.7.0"
                },
                {
                    "fixed": "22.2.0"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-21716.json"