Linux Kernel 2.6.10/2.6.11 Rc1 Bk6 n_tty.c copy_from_read_buf denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.8$0-$5k0.00

A vulnerability was found in Linux Kernel 2.6.10/2.6.11 Rc1 Bk6 (Operating System) and classified as problematic. Affected by this issue is the function copy_from_read_buf of the file n_tty.c. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is confidentiality. CVE summarizes:

signedness error in the copy_from_read_buf function in n_tty.c for linux kernel 2.6.10 and 2.6.11rc1 allows local users to read kernel memory via a negative argument.

The bug was discovered 02/15/2005. The weakness was shared 05/02/2005 by Georgi Guninski (Website). The advisory is available at guninski.com. This vulnerability is handled as CVE-2005-0530 since 02/24/2005. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 116 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 21928 (CentOS 3 / 4 : kernel (CESA-2005:366)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117964 (CentOS Security Update for Kernel (CESA-2005:366)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (19327) and Tenable (21928). The entries 1226, 1227, 1228 and 1224 are related to this item.

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: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 21928
Nessus Name: CentOS 3 / 4 : kernel (CESA-2005:366)
Nessus File: 🔍
Nessus Risk: 🔍
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Nessus Context: 🔍

OpenVAS ID: 65101
OpenVAS Name: SLES9: Security update for Linux kernel
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/24/2004 🔍
02/15/2005 +53 days 🔍
02/15/2005 +0 days 🔍
02/15/2005 +0 days 🔍
02/24/2005 +9 days 🔍
04/19/2005 +54 days 🔍
05/02/2005 +13 days 🔍
05/02/2005 +0 days 🔍
11/23/2005 +205 days 🔍
07/05/2006 +224 days 🔍
03/10/2015 +3170 days 🔍
06/11/2019 +1554 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: guninski.com
Researcher: Georgi Guninski
Status: Not defined
Confirmation: 🔍

CVE: CVE-2005-0530 (🔍)
OVAL: 🔍

X-Force: 19327
Vulnerability Center: 9730 - Linux kernel Local Memory Read via copy_from_read_buf Function, Low
SecurityFocus: 12555 - Linux Kernel Multiple Local Buffer Overflow And Memory Disclosure Vulnerabilities
Secunia: 14270 - Linux Kernel Memory Disclosure and Privilege Escalation, Less Critical
OSVDB: 13819 - CVE-2005-0530 - Linux - Kernel - Information Disclosure Issue

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Entryinfo

Created: 03/10/2015 23:05
Updated: 06/11/2019 17:26
Changes: 03/10/2015 23:05 (75), 06/11/2019 17:26 (11)
Complete: 🔍

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