GNU Grub 2 1.97 improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in GNU Grub 2 1.97. Affected is an unknown function. Performing a manipulation results in improper authentication. This vulnerability was named CVE-2009-4128. There is no available exploit.

Detailsinfo

A vulnerability was found in GNU Grub 2 1.97. It has been classified as critical. This affects some unknown processing. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was presented 12/01/2009 (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2009-4128 since 11/30/2009. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 65119 (Ubuntu 9.10 : grub2 vulnerability (USN-868-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195010 (Ubuntu Security Notification for Grub2 Vulnerability (USN-868-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (54210), Tenable (65119), SecurityFocus (BID 36968†) and Vulnerability Center (SBV-24537†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.4
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 65119
Nessus Name: Ubuntu 9.10 : grub2 vulnerability (USN-868-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/02/2006 🔍
11/08/2009 +1133 days 🔍
11/30/2009 +22 days 🔍
12/01/2009 +1 days 🔍
12/01/2009 +0 days 🔍
01/11/2010 +41 days 🔍
03/09/2013 +1153 days 🔍
03/18/2015 +739 days 🔍
02/10/2025 +3616 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: securityfocus.com⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-4128 (🔍)
GCVE (CVE): GCVE-0-2009-4128
GCVE (VulDB): GCVE-100-50973

OVAL: 🔍

X-Force: 54210
SecurityFocus: 36968 - GNU GRUB Local Authentication Bypass Vulnerability
Vulnerability Center: 24537 - GNU GRand Unified Bootloader (GRUB) 1.97 Local Authentication Bypass Vulnerability, Medium

Entryinfo

Created: 03/18/2015 15:15
Updated: 02/10/2025 00:42
Changes: 03/18/2015 15:15 (52), 02/19/2017 20:00 (12), 08/28/2021 09:49 (3), 02/10/2025 00:42 (16)
Complete: 🔍
Cache ID: 216:E1D:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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