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    CVE-2020-35683

    An issue was discovered in HCC Nichestack 3.0. The code that parses ICMP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the ICMP checksum. When the IP payload size is set to be smaller than the size of the IP header, the ICMP checksum computation function may read out of bounds, causing a Denial-of-Service.

    Published:Aug 19, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 19, 2021
    EPSS Score:0.00534
    CVSS Score:7.5

    Affected Products

    Vendor
    Hcc-embedded
    Product
    Nichestack
    Vendor
    Siemens
    Product
    7km9300-0ae02-0aa0
    Vendor
    Siemens
    Product
    7km9300-0ae02-0aa0 Firmware

    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-2020-35684 (CVSS 7.5) — An issue was discovered in HCC Nichestack 3.0. The code that parses TCP packets relies on an unchecked value o…
    CVE-2021-36762 (CVSS 7.5) — An issue was discovered in HCC Embedded InterNiche NicheStack through 4.3. The tfshnd():tftpsrv.c TFTP packet …
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    CVE-2021-31400 (CVSS 7.5) — An issue was discovered in tcp_pulloutofband() in tcp_in.c in HCC embedded InterNiche 4.0.1. The TCP out-of-ba…
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    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