CVE Feed

    Dashboard / CVE / CVE-2020-11939

    CVE-2020-11939

    In nDPI through 3.2 Stable, the SSH protocol dissector has multiple KEXINIT integer overflows that result in a controlled remote heap overflow in concat_hash_string in ssh.c. Due to the granular nature of the overflow primitive and the ability to control both the contents and layout of the nDPI library's heap memory through remote input, this vulnerability may be abused to achieve full Remote Code Execution against any network inspection stack that is linked against nDPI and uses it to perform network traffic analysis.

    Published:Apr 23, 2020
    Last Modified:Nov 21, 2024
    EPS:Apr 23, 2020
    EPSS Score:0.08342
    CVSS Score:9.8

    Affected Products

    Vendor
    Ntop
    Product
    Ndpi

    Exploits

    https://securitylab.github.com/advisories/GHSL-2020-051_052-ntop-ndpihttps://securitylab.github.com/advisories/GHSL-2020-051_052-ntop-ndpi

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-86098 (CVSS 8.3) — ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape func…
    CVE-2025-25066 (CVSS 8.1) — nDPI through 4.12 has a potential stack-based buffer overflow in ndpi_address_cache_restore in lib/ndpi_cache.…
    CVE-2021-36082 (CVSS 8.8) — ntop nDPI 3.4 has a stack-based buffer overflow in processClientServerHello.…
    CVE-2020-15471 (CVSS 9.1) — In nDPI through 3.2, the packet parsing code is vulnerable to a heap-based buffer over-read in ndpi_parse_pack…
    CVE-2020-15472 (CVSS 9.1) — In nDPI through 3.2, the H.323 dissector is vulnerable to a heap-based buffer over-read in ndpi_search_h323 in…
    CVE-2020-15473 (CVSS 9.1) — In nDPI through 3.2, the OpenVPN dissector is vulnerable to a heap-based buffer over-read in ndpi_search_openv…
    CVE-2020-15474 (CVSS 9.8) — In nDPI through 3.2, there is a stack overflow in extractRDNSequence in lib/protocols/tls.c.…
    CVE-2020-15475 (CVSS 9.8) — In nDPI through 3.2, ndpi_reset_packet_line_info in lib/ndpi_main.c omits certain reinitialization, leading to…
    CVE-2020-15476 (CVSS 7.5) — In nDPI through 3.2, the Oracle protocol dissector has a heap-based buffer over-read in ndpi_search_oracle in …
    CVE-2020-11940 (CVSS 7.5) — In nDPI through 3.2 Stable, an out-of-bounds read in concat_hash_string in ssh.c can be exploited by a network…

    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