CVE-2018-8784

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Source
https://cve.org/CVERecord?id=CVE-2018-8784
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-8784.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2018-8784
Downstream
Related
Published
2018-11-29T18:29:00.803Z
Modified
2026-07-08T18:16:19.773782Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfxdecompresssegment() that results in a memory corruption and probably even a remote code execution.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "1.2.0"
                }
            ],
            "vendor_product": "freerdp:freerdp",
            "source": "CPE_RANGE"
        },
        {
            "cpes": [
                "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "18.04"
                },
                {
                    "last_affected": "18.04"
                },
                {
                    "introduced": "18.10"
                },
                {
                    "last_affected": "18.10"
                }
            ],
            "vendor_product": "canonical:ubuntu_linux",
            "source": "CPE_STRING"
        }
    ]
}
References

Affected packages

Git / github.com/freerdp/freerdp

Affected ranges

Type
GIT
Repo
https://github.com/freerdp/freerdp
Events
Introduced
84f8161897534d9263ffebe43092827d40fc7ffb
Last affected
a4f147683db7aa99a6075aeaf7c698bc6ba84d11
Fixed
17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7
Database specific 
{
    "cpe": [
        "cpe:2.3:a:freerdp:freerdp:2.0.0:rc1:*:*:*:*:*:*",
        "cpe:2.3:a:freerdp:freerdp:2.0.0:rc2:*:*:*:*:*:*",
        "cpe:2.3:a:freerdp:freerdp:2.0.0:rc3:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "2.0.0-rc1"
        },
        {
            "last_affected": "2.0.0-rc1"
        },
        {
            "introduced": "2.0.0-rc2"
        },
        {
            "last_affected": "2.0.0-rc2"
        },
        {
            "introduced": "2.0.0-rc3"
        },
        {
            "last_affected": "2.0.0-rc3"
        }
    ],
    "source": [
        "CPE_STRING",
        "REFERENCES"
    ]
}

Affected versions

2.*
2.0.0-rc1
2.0.0-rc2
2.0.0-rc3

Database specific

vanir_signatures 
[
    {
        "source": "https://github.com/freerdp/freerdp/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7",
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "5425658578842756555766032532911221974",
            "length": 498.0
        },
        "deprecated": false,
        "id": "CVE-2018-8784-3ee578e2",
        "target": {
            "function": "zgfx_GetBits",
            "file": "libfreerdp/codec/zgfx.c"
        }
    },
    {
        "source": "https://github.com/freerdp/freerdp/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7",
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "183004235591668635388793416221527180952",
                "308551081678144123828325673808498648805",
                "154313303284566741372749909479475738030",
                "132884302306568066085333383287459666709",
                "262492858770932996240150910068351063854",
                "203702999331377103310646261393761919250",
                "167380914164342764959401217543543095567",
                "13540684346446715777637802021582209554",
                "311891805920254916498775542912402450263",
                "241516527663528718358904487599677710163",
                "97308244726792857383179309575420684207",
                "18665083726635648619654057544017589864",
                "334986266750018248128782574845546139084",
                "26307924798652688742837269370744161570",
                "172851853559149624580627288319374799581",
                "45345896685779517200997882316629828497",
                "264274875738533249388971173521124600956",
                "194011039796460496619575215719090768957",
                "173226611019216288356929805813144347970",
                "259557405479208692191625725125700443687",
                "126584308940012886196255270920460352175",
                "152539648080863676852541452921266141059",
                "170170358519463512489981916209534205080"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "id": "CVE-2018-8784-99d08a87",
        "target": {
            "file": "libfreerdp/codec/zgfx.c"
        }
    },
    {
        "source": "https://github.com/freerdp/freerdp/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7",
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "322517898482837905962037901991472629201",
            "length": 2505.0
        },
        "deprecated": false,
        "id": "CVE-2018-8784-e4341463",
        "target": {
            "function": "zgfx_decompress_segment",
            "file": "libfreerdp/codec/zgfx.c"
        }
    }
]
vanir_signatures_modified 
"2026-07-08T18:16:19Z"
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-8784.json"