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    CVE-2020-24340

    An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The code that processes DNS responses in pico_mdns_handle_data_as_answers_generic() in pico_mdns.c does not check whether the number of answers/responses specified in a DNS packet header corresponds to the response data available in the packet, leading to an out-of-bounds read, invalid pointer dereference, and Denial-of-Service.

    Published:Dec 11, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 11, 2020
    EPSS Score:0.00495
    CVSS Score:7.5

    Affected Products

    Vendor
    Altran
    Product
    Picotcp
    Vendor
    Altran
    Product
    Picotcp-ng

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

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    CVE-2020-24339 (CVSS 7.5) — An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The DNS domain name record decompression func…
    CVE-2020-24338 (CVSS 9.8) — An issue was discovered in picoTCP through 1.7.0. The DNS domain name record decompression functionality in pi…
    CVE-2020-24337 (CVSS 7.5) — An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. When an unsupported TCP option with zero leng…
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    CVE-2020-17444 (CVSS 7.5) — An issue was discovered in picoTCP 1.7.0. The routine for processing the next header field (and deducing wheth…
    CVE-2020-17443 (CVSS 7.5) — An issue was discovered in picoTCP 1.7.0. The code for creating an ICMPv6 echo replies doesn't check whether t…
    CVE-2020-17442 (CVSS 7.5) — An issue was discovered in picoTCP 1.7.0. The code for parsing the hop-by-hop IPv6 extension headers does not …

    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