Vulnerability Details : CVE-2009-4128
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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2009-4128
- cpe:2.3:a:gnu:grub_2:1.97:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2009-4128
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 35 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2009-4128
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST |
CWE ids for CVE-2009-4128
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
References for CVE-2009-4128
-
https://exchange.xforce.ibmcloud.com/vulnerabilities/54210
GNU GRUB 2 password authentication bypass CVE-2009-4128 Vulnerability Report
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http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=555195
#555195 - grub2: password checking oddity - Debian Bug report logsExploit
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http://www.openwall.com/lists/oss-security/2024/01/15/3
oss-security - CVE-2023-4001: a password bypass vulnerability in the downstream GRUB boot manager
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http://www.securityfocus.com/bid/36968
Patch
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