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    CVE-2019-5544

    OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue. VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.

    Published:Dec 6, 2019
    Last Modified:Oct 30, 2025
    EPS:Dec 6, 2019
    EPSS Score:0.93038
    CVSS Score:9.8

    CISA Notification

    Description

    OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue. VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    May 3, 2022
    1592 days ago
    Alert Date
    Nov 3, 2021
    1773 days ago

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Openslp
    Product
    Openslp
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux For Ibm Z Systems
    Vendor
    Redhat
    Product
    Enterprise Linux For Ibm Z Systems Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Big Endian
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Big Endian Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Little Endian
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Little Endian Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Vmware
    Product
    Esxi
    Vendor
    Vmware
    Product
    Horizon Daas

    Exploits

    https://github.com/dgh05t/VMware_ESXI_OpenSLP_PoCshttps://github.com/HynekPetrak/CVE-2019-5544_CVE-2020-3992

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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    References

    http://www.openwall.com/lists/oss-security/2019/12/10/2
    http://www.openwall.com/lists/oss-security/2019/12/11/2
    http://www.vmware.com/security/advisories/VMSA-2019-0022.html
    https://access.redhat.com/errata/RHSA-2019:4240
    https://access.redhat.com/errata/RHSA-2020:0199
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA3LYAJ2NRKMOZLZOQNDJ5TNQRFMWGHF/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZPXXJZLPLAQULBCJVI5NNWZ3PGWXGXWG/
    https://security.gentoo.org/glsa/202005-12
    http://www.openwall.com/lists/oss-security/2019/12/10/2
    http://www.openwall.com/lists/oss-security/2019/12/11/2
    http://www.vmware.com/security/advisories/VMSA-2019-0022.html
    https://access.redhat.com/errata/RHSA-2019:4240
    https://access.redhat.com/errata/RHSA-2020:0199
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA3LYAJ2NRKMOZLZOQNDJ5TNQRFMWGHF/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZPXXJZLPLAQULBCJVI5NNWZ3PGWXGXWG/
    https://security.gentoo.org/glsa/202005-12
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5544

    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