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    CVE-2021-31227

    An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to an incorrect signed integer comparison. This vulnerability requires the attacker to send a malformed HTTP packet with a negative Content-Length, which bypasses the size checks and results in a large heap overflow in the wbs_multidata buffer copy.

    Published:Aug 19, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 19, 2021
    EPSS Score:0.00217
    CVSS Score:7.5

    Affected Products

    Vendor
    Hcc-embedded
    Product
    Nichestack

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2021-31401 (CVSS 7.5) — An issue was discovered in tcp_rcv() in nptcp.c in HCC embedded InterNiche 4.0.1. The TCP header processing co…
    CVE-2020-35685 (CVSS 9.1) — An issue was discovered in HCC Nichestack 3.0. The code that generates Initial Sequence Numbers (ISNs) for TCP…
    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-2020-35683 (CVSS 7.5) — An issue was discovered in HCC Nichestack 3.0. The code that parses ICMP packets relies on an unchecked value …
    CVE-2021-36762 (CVSS 7.5) — An issue was discovered in HCC Embedded InterNiche NicheStack through 4.3. The tfshnd():tftpsrv.c TFTP packet …
    CVE-2021-27565 (CVSS 7.5) — The web server in InterNiche NicheStack through 4.0.1 allows remote attackers to cause a denial of service (in…
    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…
    CVE-2021-31228 (CVSS 7.5) — An issue was discovered in HCC embedded InterNiche 4.0.1. This vulnerability allows the attacker to predict a …

    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