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    CVE-2021-3595

    An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the tftp_input() function and could occur while processing a udp packet that is smaller than the size of the 'tftp_t' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.

    Published:Jun 14, 2021
    Last Modified:Nov 21, 2024
    EPS:Jun 15, 2021
    EPSS Score:0.00018
    CVSS Score:3.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Libslirp Project
    Product
    Libslirp
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-824 Access of Uninitialized Pointer

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    https://bugzilla.redhat.com/show_bug.cgi?id=1970489
    https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html
    https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI/
    https://security.gentoo.org/glsa/202107-44
    https://security.netapp.com/advisory/ntap-20210805-0004/
    https://bugzilla.redhat.com/show_bug.cgi?id=1970489
    https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html
    https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI/
    https://security.gentoo.org/glsa/202107-44
    https://security.netapp.com/advisory/ntap-20210805-0004/

    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