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    CVE-2019-17455

    Libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthResponse read and write operations, as demonstrated by a stack-based buffer over-read in buildSmbNtlmAuthRequest in smbutil.c for a crafted NTLM request.

    Published:Oct 8, 2019
    Last Modified:Nov 21, 2024
    EPS:Oct 10, 2019
    EPSS Score:0.03934
    CVSS Score:9.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Nongnu
    Product
    Libntlm
    Vendor
    Opensuse
    Product
    Backports Sle
    Vendor
    Opensuse
    Product
    Leap

    Exploits

    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942145https://gitlab.com/jas/libntlm/issues/2https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942145https://gitlab.com/jas/libntlm/issues/2

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00029.html
    http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00032.html
    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942145
    https://gitlab.com/jas/libntlm/issues/2
    https://lists.debian.org/debian-lts-announce/2020/05/msg00010.html
    https://lists.debian.org/debian-lts-announce/2021/11/msg00026.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3BVFO3OVJPMSGIXBKNOCVOJZ3UTGZQF5/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZ5YWYNOJ5HMCKAHWLTY4MXZQWJJCBI7/
    https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-17455.html
    https://security-tracker.debian.org/tracker/CVE-2019-17455
    http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00029.html
    http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00032.html
    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942145
    https://gitlab.com/jas/libntlm/issues/2
    https://lists.debian.org/debian-lts-announce/2020/05/msg00010.html
    https://lists.debian.org/debian-lts-announce/2021/11/msg00026.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3BVFO3OVJPMSGIXBKNOCVOJZ3UTGZQF5/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZ5YWYNOJ5HMCKAHWLTY4MXZQWJJCBI7/
    https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-17455.html
    https://security-tracker.debian.org/tracker/CVE-2019-17455

    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