Linux Kernel 2.6.10/2.6.11 Rc1 Bk6 n_tty.c heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel 2.6.10/2.6.11 Rc1 Bk6. Impacted is an unknown function of the file n_tty.c. Such manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2005-0529. The attack requires being on the local network. Additionally, an exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel 2.6.10/2.6.11 Rc1 Bk6 (Operating System). Affected by this issue is an unknown functionality of the file n_tty.c. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality. CVE summarizes:

Linux kernel 2.6.10 and 2.6.11rc1-bk6 uses different size types for offset arguments to the proc_file_read and locks_read_proc functions, which leads to a heap-based buffer overflow when a signed comparison causes negative integers to be used in a positive context.

The bug was discovered 02/15/2005. The weakness was released 02/15/2005 by Georgi Guninski (Website). The advisory is available at guninski.com. This vulnerability is handled as CVE-2005-0529 since 02/24/2005. The attack can only be done within the local network. No form of authentication is required for exploitation. Technical details as well as a exploit are known.

The exploit is available at guninski.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 53 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. Applying a patch is able to eliminate this problem. The bugfix is ready for download at kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (21928), OSVDB (13818†), Secunia (SA14270†) and Vulnerability Center (SBV-9729†). Entries connected to this vulnerability are available at VDB-1227, VDB-1228, VDB-1224 and VDB-1223. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
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: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

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

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: kernel.org

Timelineinfo

12/24/2004 🔍
02/15/2005 +53 days 🔍
02/15/2005 +0 days 🔍
02/15/2005 +0 days 🔍
02/21/2005 +6 days 🔍
02/24/2005 +3 days 🔍
04/19/2005 +54 days 🔍
05/02/2005 +13 days 🔍
07/05/2006 +429 days 🔍
07/13/2024 +6583 days 🔍

Sourcesinfo

Vendor: kernel.org

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

CVE: CVE-2005-0529 (🔍)
GCVE (CVE): GCVE-0-2005-0529
GCVE (VulDB): GCVE-100-1226

OVAL: 🔍

Secunia: 14270 - Linux Kernel Memory Disclosure and Privilege Escalation, Less Critical
OSVDB: 13818 - CVE-2005-0529 - Linux - Kernel - Buffer Overflow Issue
Vulnerability Center: 9729

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 02/21/2005 12:57
Updated: 07/13/2024 03:30
Changes: 02/21/2005 12:57 (84), 07/01/2019 12:54 (4), 07/13/2024 03:30 (19)
Complete: 🔍
Cache ID: 216:41D:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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