CVE-2018-19791

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    CVE-2018-19791

    Published: 3 Dec 2018Last Modified: 8 Jul 2026

    Summary:

    Details: The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 does not correctly handle requests for byte sequences, allowing an attacker to amplify the response size by requesting the entire response body repeatedly, as demonstrated by an HTTP Range header value beginning with the "bytes=0-,0-" substring.

    References: https://github.com/litespeedtech/openlitespeed/issues/117

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -f3fa070f9bef5bdbc10f72915701e86fd5a3b6c2

    Affected versions

    1.5.0-NA
    1.5.0-rc1
    1.5.0-rc2
    1.5.0-rc3
    1.5.0-rc4
    1.5.0-rc5

    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
    CVE-2018-19791 | CVE-DB