CVE-2020-14405

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Source
https://nvd.nist.gov/vuln/detail/CVE-2020-14405
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-14405.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-14405
Downstream
Related
Published
2020-06-17T16:15:12Z
Modified
2025-10-15T11:56:26.897999Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/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. libvncclient/rfbproto.c does not limit TextChat size.

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
8937203441ee241c4ace85da687b7d6633a12365

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

[
    {
        "source": "https://github.com/libvnc/libvncserver/commit/8937203441ee241c4ace85da687b7d6633a12365",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "target": {
            "file": "libvncclient/rfbproto.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "89223639384740056327633360190699813562",
                "247750316289086952643248309325503627435",
                "272598481191648168756492052067410401352",
                "176189432925519699138405263611716047346",
                "165114043731271655018390940198517944275",
                "227678021181733996754695317892915777790",
                "25517129005542970557011804220768259493"
            ]
        },
        "id": "CVE-2020-14405-ab6a7402"
    },
    {
        "source": "https://github.com/libvnc/libvncserver/commit/8937203441ee241c4ace85da687b7d6633a12365",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "function": "HandleRFBServerMessage",
            "file": "libvncclient/rfbproto.c"
        },
        "digest": {
            "function_hash": "120056847109929900322733339222930740819",
            "length": 15741.0
        },
        "id": "CVE-2020-14405-ca65def6"
    }
]