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    CVE-2019-19945

    uhttpd in OpenWrt through 18.06.5 and 19.x through 19.07.0-rc2 has an integer signedness error. This leads to out-of-bounds access to a heap buffer and a subsequent crash. It can be triggered with an HTTP POST request to a CGI script, specifying both "Transfer-Encoding: chunked" and a large negative Content-Length value.

    Published:Mar 16, 2020
    Last Modified:Nov 21, 2024
    EPS:Mar 16, 2020
    EPSS Score:0.00975
    CVSS Score:7.5

    Affected Products

    Vendor
    Openwrt
    Product
    Openwrt

    Exploits

    https://github.com/delicateByte/CVE-2019-19945_Test

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

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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