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    CVE-2020-12740

    tcprewrite in Tcpreplay through 4.3.2 has a heap-based buffer over-read during a get_c operation. The issue is being triggered in the function get_ipv6_next() at common/get.c.

    Published:May 8, 2020
    Last Modified:Nov 21, 2024
    EPS:May 8, 2020
    EPSS Score:0.00513
    CVSS Score:9.1

    Affected Products

    Vendor
    Broadcom
    Product
    Tcpreplay
    Vendor
    Fedoraproject
    Product
    Fedora

    Exploits

    https://github.com/appneta/tcpreplay/issues/576https://github.com/appneta/tcpreplay/issues/576

    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-2025-51006 (CVSS 7.8) — Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the dlt_linuxsll2_cleanup() …
    CVE-2025-9649 (CVSS 1.9) — A security vulnerability has been detected in appneta tcpreplay 4.5.1. Impacted is the function calc_sleep_tim…
    CVE-2025-9386 (CVSS 1.9) — A vulnerability has been found in appneta tcpreplay up to 4.5.1. The impacted element is the function get_l2le…
    CVE-2025-9385 (CVSS 1.9) — A flaw has been found in appneta tcpreplay up to 4.5.1. The affected element is the function fix_ipv6_checksum…
    CVE-2025-9384 (CVSS 1.9) — A vulnerability was detected in appneta tcpreplay up to 4.5.1. Impacted is the function tcpedit_post_args of t…
    CVE-2025-9019 (CVSS 1.3) — A vulnerability has been found in tcpreplay 4.5.1. This vulnerability affects the function mask_cidr6 of the f…
    CVE-2024-22654 (CVSS 7.5) — tcpreplay v4.4.4 was discovered to contain an infinite loop via the tcprewrite function at get.c.…
    CVE-2024-3024 (CVSS 5.3) — A vulnerability was found in appneta tcpreplay up to 4.4.4. It has been classified as problematic. This affect…
    CVE-2023-43279 (CVSS 6.5) — Null Pointer Dereference in mask_cidr6 component at cidr.c in Tcpreplay 4.4.4 allows attackers to crash the ap…

    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