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CVE-2009-4128

Date: November 30, 2009

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.

Severity Score

Related Resources (7)

https://people.canonical.com/~ubuntu-security/cve/CVE-2009-4128
https://exchange.xforce.ibmcloud.com/vulnerabilities/54210
https://nvd.nist.gov/vuln/detail/CVE-2009-4128
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=555195
http://www.openwall.com/lists/oss-security/2024/01/15/3
http://www.securityfocus.com/bid/36968
https://www.mend.io/vulnerability-database/CVE-2009-4128

Severity Score

Weakness Type (CWE)

Improper Authentication

CWE-287

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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