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    CVE-2020-14397

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

    Published:Jun 17, 2020
    Last Modified:Nov 21, 2024
    EPS:Jun 17, 2020
    EPSS Score:0.02426
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Libvnc Project
    Product
    Libvncserver
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux
    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

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
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    References

    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
    https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
    https://github.com/LibVNC/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0
    https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13
    https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html
    https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html
    https://usn.ubuntu.com/4434-1/
    https://usn.ubuntu.com/4573-1/
    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
    https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
    https://github.com/LibVNC/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0
    https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13
    https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html
    https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html
    https://usn.ubuntu.com/4434-1/
    https://usn.ubuntu.com/4573-1/

    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