CVE-2020-29074

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Source
https://cve.org/CVERecord?id=CVE-2020-29074
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-29074.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-29074
Downstream
Related
Published
2020-11-25T23:15:11.300Z
Modified
2026-04-16T04:39:58.597399228Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

scan.c in x11vnc 0.9.16 uses IPC_CREAT|0777 in shmget calls, which allows access by actors other than the current user.

References

Affected packages

Git / github.com/libvnc/x11vnc

Affected ranges

Type
GIT
Repo
https://github.com/libvnc/x11vnc
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
4ca006fed80410bd9b061a1519bd5d9366bb0bc8
Fixed
69eeb9f7baa14ca03b16c9de821f9876def7a36a
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.9.16"
        }
    ]
}

Affected versions

0.*
0.9.14
0.9.15
0.9.16

Database specific

unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "32"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "33"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "34"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "9.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "10.0"
            }
        ]
    }
]
vanir_signatures 
[
    {
        "id": "CVE-2020-29074-16496eb1",
        "signature_version": "v1",
        "source": "https://github.com/libvnc/x11vnc/commit/69eeb9f7baa14ca03b16c9de821f9876def7a36a",
        "signature_type": "Line",
        "target": {
            "file": "src/scan.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "56740894291832566308400293842992874083",
                "35125186519063144221375988472889355695",
                "20298482367566999856091248652949110519",
                "126259484339115188972053899482603857563"
            ]
        },
        "deprecated": false
    },
    {
        "deprecated": false,
        "id": "CVE-2020-29074-32a2291b",
        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "file": "src/scan.c",
            "function": "shm_create"
        },
        "digest": {
            "function_hash": "105144691058749000443747703101666032586",
            "length": 2481.0
        },
        "source": "https://github.com/libvnc/x11vnc/commit/69eeb9f7baa14ca03b16c9de821f9876def7a36a"
    }
]
vanir_signatures_modified 
"2026-04-11T16:25:36Z"
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-29074.json"