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
2020-11-25T23:15:11Z
Modified
2026-07-09T00:37:10Z
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.

Database specific 
{
    "unresolved_ranges":  [
        {
            "cpes":  [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "9.0"
                },
                {
                    "last_affected":  "9.0"
                },
                {
                    "introduced":  "10.0"
                },
                {
                    "last_affected":  "10.0"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "debian:debian_linux"
        },
        {
            "cpes":  [
                "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "32"
                },
                {
                    "last_affected":  "32"
                },
                {
                    "introduced":  "33"
                },
                {
                    "last_affected":  "33"
                },
                {
                    "introduced":  "34"
                },
                {
                    "last_affected":  "34"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "fedoraproject:fedora"
        }
    ]
}
References

Affected packages

Git / github.com/libvnc/x11vnc

Affected ranges

Type
GIT
Repo
https://github.com/libvnc/x11vnc
Events
Introduced
4ca006fed80410bd9b061a1519bd5d9366bb0bc8
Last Affected
4ca006fed80410bd9b061a1519bd5d9366bb0bc8
Fixed
69eeb9f7baa14ca03b16c9de821f9876def7a36a
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:x11vnc_project:x11vnc:0.9.16:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0.9.16"
        },
        {
            "last_affected":  "0.9.16"
        }
    ],
    "source":  [
        "CPE_STRING",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.9.16

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-29074.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "56740894291832566308400293842992874083",
                "35125186519063144221375988472889355695",
                "20298482367566999856091248652949110519",
                "126259484339115188972053899482603857563"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2020-29074-16496eb1",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/libvnc/x11vnc/commit/69eeb9f7baa14ca03b16c9de821f9876def7a36a",
        "target":  {
            "file":  "src/scan.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "105144691058749000443747703101666032586",
            "length":  2481
        },
        "id":  "CVE-2020-29074-32a2291b",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/libvnc/x11vnc/commit/69eeb9f7baa14ca03b16c9de821f9876def7a36a",
        "target":  {
            "file":  "src/scan.c",
            "function":  "shm_create"
        }
    }
]
vanir_signatures_modified 
"2026-07-09T00:37:10Z"