Linux Kernel 2.6.28.2 eisa_eeprom_read access control

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability classified as critical was found in Linux Kernel 2.6.28.2 (Operating System). Affected by this vulnerability is the function eisa_eeprom_read. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality. The summary by CVE is:

The eisa_eeprom_read function in the parisc isa-eeprom component (drivers/parisc/eisa_eeprom.c) in the Linux kernel before 2.6.31-rc6 allows local users to access restricted memory via a negative ppos argument, which bypasses a check that assumes that ppos is positive and causes an out-of-bounds read in the readb function.

The issue has been introduced in 12/25/2008. The weakness was published 08/18/2009 (oss-sec). The advisory is shared at openwall.com. This vulnerability is known as CVE-2009-2846. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/20/2021). MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 236 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 44793 (Debian DSA-1928-1 : linux-2.6.24 - privilege escalation/denial of service/sensitive memory leak), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195000 (Ubuntu Security Notification for Linux, Linux-source-2.6.15 Vulnerabilities (USN-852-1)).

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 (52906) and Tenable (44793).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 44793
Nessus Name: Debian DSA-1928-1 : linux-2.6.24 - privilege escalation/denial of service/sensitive memory leak
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 64755
OpenVAS Name: Debian Security Advisory DSA 1872-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/25/2008 🔍
07/20/2009 +207 days 🔍
07/31/2009 +11 days 🔍
08/18/2009 +17 days 🔍
08/18/2009 +0 days 🔍
08/18/2009 +0 days 🔍
10/27/2009 +70 days 🔍
02/24/2010 +120 days 🔍
03/18/2015 +1848 days 🔍
08/20/2021 +2347 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-2846 (🔍)
OVAL: 🔍

X-Force: 52906
Vulnerability Center: 23871 - Linux kernel < 2.6.31-rc6 Restricted Memory Unauthorized Access Vulnerability, Medium
SecurityFocus: 35930 - Linux Kernel 'clear_child_tid()' Local Denial of Service Vulnerability

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/20/2021 08:24
Changes: 03/18/2015 15:15 (64), 02/16/2017 10:03 (9), 08/20/2021 08:23 (4), 08/20/2021 08:24 (1)
Complete: 🔍
Cache ID: 18:1CD:103

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