CVE-2017-18594

nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a double free when an SSH connection fails, as demonstrated by a leading \n character to ssh-brute.nse or ssh-auth-methods.nse.

References

Affected packages

Git / github.com/nmap/nmap

Affected ranges

Type: GIT
Repo: https://github.com/nmap/nmap
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

350bbe0597d37ad67abe5fef8fba984707b4e9ad

Database specific

vanir_signatures

[
    {
        "target": {
            "file": "nse_libssh2.cc",
            "function": "do_session_handshake"
        },
        "id": "CVE-2017-18594-884d6df0",
        "source": "https://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9ad",
        "digest": {
            "length": 602.0,
            "function_hash": "181885123553807210789057297674015574442"
        },
        "signature_version": "v1",
        "deprecated": false,
        "signature_type": "Function"
    },
    {
        "target": {
            "file": "nse_libssh2.cc"
        },
        "id": "CVE-2017-18594-eec30225",
        "source": "https://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9ad",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "89047191141271898078379186729701011087",
                "288418200066937758181363772380073444813",
                "197504247299643829413881507450264840980",
                "45853858347866020060594260890860214833",
                "230612446715307993172166006795828895723",
                "198393754361702321352110806437967051769",
                "253764268990083538657657834154227694516",
                "49832567131233925307305766627838607310",
                "55587154207647647599364397019466709572",
                "157468943989143697765082448397421470797",
                "301199915657737667528034694382631924465"
            ]
        },
        "signature_version": "v1",
        "deprecated": false,
        "signature_type": "Line"
    }
]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-18594.json"