CVE-2020-11086

In FreeRDP less than or equal to 2.0.0, there is an out-of-bound read in ntlmreadntlmv2client_challenge that reads up to 28 bytes out-of-bound to an internal structure. This has been fixed in 2.1.0.

Database specific

{
    "unresolved_ranges": [
        {
            "source": "CPE_STRING",
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
                {
                    "introduced": "10.0"
                },
                {
                    "last_affected": "10.0"
                }
            ],
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
            ]
        },
        {
            "source": "CPE_STRING",
            "vendor_product": "opensuse:leap",
            "extracted_events": [
                {
                    "introduced": "15.1"
                },
                {
                    "last_affected": "15.1"
                }
            ],
            "cpes": [
                "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"
            ]
        }
    ]
}

References

Affected packages

Git / github.com/freerdp/freerdp

Affected ranges

Type

GIT

Repo

https://github.com/freerdp/freerdp

Events

Introduced

Fixed

11b9b1ca6be433f1da5bbf5e152d554d3eb67ac6

Fixed

c098f21fdaadca57ff649eee1674f6cc321a2ec4

Database specific

{
    "cpe": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.1.0"
        }
    ]
}

Affected versions

1.*

1.0-beta1

1.0-beta2

1.0-beta4

1.0-beta5

1.0.0

1.0.1

1.1.0-beta+2013071101

1.1.0-beta1

1.1.0-beta1+android2

1.1.0-beta1+android3

1.1.0-beta1+android4

1.1.0-beta1+android5

1.1.0-beta1+ios1

1.1.0-beta1+ios2

1.1.0-beta1+ios3

1.1.0-beta1+ios4

1.2.0-beta1+android7

1.2.0-beta1+android9

2.*

2.0.0

2.0.0-beta1+android10

2.0.0-beta1+android11

2.0.0-rc0

2.0.0-rc1

2.0.0-rc2

2.0.0-rc3

2.0.0-rc4

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-11086.json"

vanir_signatures

[
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "211676456731767137019728773717396383906",
                "142002718534890085186882303774041871813",
                "326590373457921532474577125776340758673",
                "92446602161392049848322987325756642675",
                "244837119603015813013823863255436314461",
                "88986712316767417463579653199593800425",
                "205040071286649792016492765856929257982",
                "322933729723612140702113726666585771660"
            ]
        },
        "source": "https://github.com/freerdp/freerdp/commit/c098f21fdaadca57ff649eee1674f6cc321a2ec4",
        "deprecated": false,
        "signature_type": "Line",
        "id": "CVE-2020-11086-5849ac3d",
        "signature_version": "v1",
        "target": {
            "file": "winpr/libwinpr/sspi/NTLM/ntlm_compute.c"
        }
    },
    {
        "digest": {
            "length": 652.0,
            "function_hash": "191925567384038713584274953095323463496"
        },
        "source": "https://github.com/freerdp/freerdp/commit/c098f21fdaadca57ff649eee1674f6cc321a2ec4",
        "deprecated": false,
        "signature_type": "Function",
        "id": "CVE-2020-11086-a90348c5",
        "signature_version": "v1",
        "target": {
            "file": "winpr/libwinpr/sspi/NTLM/ntlm_compute.c",
            "function": "ntlm_read_ntlm_v2_client_challenge"
        }
    }
]

vanir_signatures_modified

"2026-07-09T04:02:26Z"