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    CVE-2017-18922

    It was discovered that websockets.c in LibVNCServer prior to 0.9.12 did not properly decode certain WebSocket frames. A malicious attacker could exploit this by sending specially crafted WebSocket frames to a server, causing a heap-based buffer overflow.

    Published:Feb 15, 2017
    Last Modified:Nov 21, 2024
    EPS:Jun 30, 2020
    EPSS Score:0.0298
    CVSS Score:9.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Libvncserver Project
    Product
    Libvncserver
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Siemens
    Product
    Simatic Itc1500
    Vendor
    Siemens
    Product
    Simatic Itc1500 Firmware
    Vendor
    Siemens
    Product
    Simatic Itc1500 Pro
    Vendor
    Siemens
    Product
    Simatic Itc1500 Pro Firmware
    Vendor
    Siemens
    Product
    Simatic Itc1900
    Vendor
    Siemens
    Product
    Simatic Itc1900 Firmware
    Vendor
    Siemens
    Product
    Simatic Itc1900 Pro
    Vendor
    Siemens
    Product
    Simatic Itc1900 Pro Firmware
    Vendor
    Siemens
    Product
    Simatic Itc2200
    Vendor
    Siemens
    Product
    Simatic Itc2200 Firmware
    Vendor
    Siemens
    Product
    Simatic Itc2200 Pro
    Vendor
    Siemens
    Product
    Simatic Itc2200 Pro Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00020.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00028.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html
    http://www.openwall.com/lists/oss-security/2020/06/30/3
    https://bugzilla.redhat.com/show_bug.cgi?id=1852356
    https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
    https://github.com/LibVNC/libvncserver/commit/aac95a9dcf4bbba87b76c72706c3221a842ca433
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H354QPXEZ/
    https://usn.ubuntu.com/4407-1/
    https://www.openwall.com/lists/oss-security/2020/06/30/2
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00020.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00028.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html
    http://www.openwall.com/lists/oss-security/2020/06/30/3
    https://bugzilla.redhat.com/show_bug.cgi?id=1852356
    https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
    https://github.com/LibVNC/libvncserver/commit/aac95a9dcf4bbba87b76c72706c3221a842ca433
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H354QPXEZ/
    https://usn.ubuntu.com/4407-1/
    https://www.openwall.com/lists/oss-security/2020/06/30/2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High