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    CVE-2022-43634

    This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the dsi_writeinit function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-17646.

    Published:Mar 29, 2023
    Last Modified:Feb 12, 2025
    EPS:Mar 29, 2023
    EPSS Score:0.04347
    CVSS Score:9.8

    Affected Products

    Vendor
    Netatalk
    Product
    Netatalk

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-122 Heap-based Buffer Overflow

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    CVE-2026-45699 (CVSS 7.5) — Netatalk is a Free and Open Source file server suite for Unix-like operating systems. In versions 3.1.19 throu…
    CVE-2026-7837 (CVSS 3.7) — A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involv…
    CVE-2026-44075 (CVSS 3.7) — A missing break statement in DSI OpenSession processing in Netatalk 1.5.0 through 4.4.2 causes a DSIOPT_ATTNQU…
    CVE-2026-44074 (CVSS 3.7) — Netatalk 2.1.0 through 4.4.2 combines multiple errno values using bitwise OR, resulting in incorrect error cod…
    CVE-2026-44071 (CVSS 3.7) — Netatalk 3.1.2 through 4.4.2 is compiled without FORTIFY_SOURCE, which disables built-in buffer overflow detec…
    CVE-2026-44057 (CVSS 3.1) — A dead bounds check in the Spotlight RPC unmarshaller in Netatalk 3.0.0 through 4.4.2 results in an unreachabl…
    CVE-2026-7836 (CVSS 3.1) — An incorrect calculation in the hextoint macro in Netatalk 2.0.0 through 4.4.2 due to improper uppercase chara…
    CVE-2026-7835 (CVSS 3.1) — A format string argument mismatch in Netatalk 3.0.3 through 4.4.2 allows a remote authenticated attacker to ca…
    CVE-2026-44076 (CVSS 6.7) — Insufficient sanitization of volume paths in Netatalk 3.1.0 through 4.4.2 allows a local privileged user to in…

    References

    https://github.com/Netatalk/Netatalk/pull/186
    https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZYWSGVA6WXREMB6PV56HAHKU7R6KPOP/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GEAFLA5L2SHOUFBAGUXIF2TZLGBXGJKT/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SG6WZW5LXFVH3P7ZVZRGHUVJEMEFKQLI/
    https://www.debian.org/security/2023/dsa-5503
    https://www.zerodayinitiative.com/advisories/ZDI-23-094/
    https://github.com/Netatalk/Netatalk/pull/186
    https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZYWSGVA6WXREMB6PV56HAHKU7R6KPOP/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GEAFLA5L2SHOUFBAGUXIF2TZLGBXGJKT/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SG6WZW5LXFVH3P7ZVZRGHUVJEMEFKQLI/
    https://www.debian.org/security/2023/dsa-5503
    https://www.zerodayinitiative.com/advisories/ZDI-23-094/

    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