CVE-2020-14397

See a problem?
Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2020-14397
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-14397.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-14397
Downstream
Related
Published
2020-06-17T16:15:11Z
Modified
2025-10-15T11:56:33.335429Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference.

References

Affected packages

Git / github.com/libvnc/libvncserver

Affected ranges

Type
GIT
Repo
https://github.com/libvnc/libvncserver
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
38e98ee61d74f5f5ab4aa4c77146faad1962d6d0

Affected versions

LibVNCServer-0.*

LibVNCServer-0.9.10
LibVNCServer-0.9.11
LibVNCServer-0.9.12
LibVNCServer-0.9.8
LibVNCServer-0.9.9

Other

X11VNC_0_9_10
X11VNC_0_9_11
X11VNC_0_9_12
X11VNC_0_9_7
X11VNC_0_9_8
X11VNC_0_9_9
X11VNC_REL_0_9_4
X11VNC_REL_0_9_5
X11VNC_REL_0_9_6

Database specific

vanir_signatures

[
    {
        "signature_version": "v1",
        "id": "CVE-2020-14397-57138274",
        "source": "https://github.com/libvnc/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0",
        "digest": {
            "length": 564.0,
            "function_hash": "297202612131400419264101244022029335570"
        },
        "deprecated": false,
        "target": {
            "function": "rfbClientIteratorNext",
            "file": "libvncserver/rfbserver.c"
        },
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "id": "CVE-2020-14397-62fecc1c",
        "source": "https://github.com/libvnc/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0",
        "digest": {
            "length": 129.0,
            "function_hash": "35943597304556728290599649561873686848"
        },
        "deprecated": false,
        "target": {
            "function": "sraSpanRemove",
            "file": "libvncserver/rfbregion.c"
        },
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "id": "CVE-2020-14397-7db584a1",
        "source": "https://github.com/libvnc/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0",
        "digest": {
            "length": 177.0,
            "function_hash": "13375577804589520980869365028992005452"
        },
        "deprecated": false,
        "target": {
            "function": "sraSpanInsertBefore",
            "file": "libvncserver/rfbregion.c"
        },
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "id": "CVE-2020-14397-b286e04f",
        "source": "https://github.com/libvnc/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0",
        "digest": {
            "length": 177.0,
            "function_hash": "308180803968003756632479985064601731480"
        },
        "deprecated": false,
        "target": {
            "function": "sraSpanInsertAfter",
            "file": "libvncserver/rfbregion.c"
        },
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "id": "CVE-2020-14397-c6e68006",
        "source": "https://github.com/libvnc/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0",
        "digest": {
            "line_hashes": [
                "129789622784888703049761371788375090829",
                "192021373110556373924439968139735438884",
                "61072920218535349534747548085317793870",
                "290028638275504518166892205271637573622",
                "309529031156275530272242272036928506489",
                "63814239015190438186515325761625769582",
                "305345191105789934771957096566624699162",
                "164856137291477852452065722557293518470",
                "258276280196864558935373940393721172142",
                "260530719255116134297278517836890348386",
                "219211903808393606215952572397156439919",
                "164379770128048257586355656012362062922",
                "49864376157076557018843636422687187024",
                "326415775950170687086498577993376834425",
                "176015776013475282985826867223578781969",
                "188226683699824686304425512567088681309",
                "87338811101464322177305173082397686098",
                "338038670024466485237077130119798763896",
                "200654883490875339150761829742367690988"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "target": {
            "file": "libvncserver/rfbregion.c"
        },
        "signature_type": "Line"
    },
    {
        "signature_version": "v1",
        "id": "CVE-2020-14397-dcee1ebf",
        "source": "https://github.com/libvnc/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0",
        "digest": {
            "line_hashes": [
                "188611924461224704302489486341034162652",
                "45100662802048171843781279201327666989",
                "228183687346468758546468784391674645379",
                "112246271884870165818073004635834463683",
                "322962774470696617483175220566020184863",
                "276446598387385854228408982083396903462",
                "318670290681636359680857980044567325665",
                "28880945584438269491008089576739099616"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "target": {
            "file": "libvncserver/rfbserver.c"
        },
        "signature_type": "Line"
    },
    {
        "signature_version": "v1",
        "id": "CVE-2020-14397-ddcdae11",
        "source": "https://github.com/libvnc/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0",
        "digest": {
            "length": 105.0,
            "function_hash": "57427340694778193739664377224873694190"
        },
        "deprecated": false,
        "target": {
            "function": "rfbReleaseClientIterator",
            "file": "libvncserver/rfbserver.c"
        },
        "signature_type": "Function"
    }
]