CVE-2009-4128

    Dashboard / Vulnerabilities / CVE-2009-4128

    CVE-2009-4128

    Published: 1 Dec 2009Last Modified: 10 Apr 2026

    Summary:

    Details: GNU GRand Unified Bootloader (GRUB) 2 1.97 only compares the submitted portion of a password with the actual password, which makes it easier for physically proximate attackers to conduct brute force attacks and bypass authentication by submitting a password whose length is 1.

    References: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=555195, http://www.securityfocus.com/bid/36968, http://www.openwall.com/lists/oss-security/2024/01/15/3, https://exchange.xforce.ibmcloud.com/vulnerabilities/54210

    Affected packages

    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-2009-4128 | CVE-DB