Linux Kernel 2.6.8.1 nls_ascii.c memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0$0-$5k0.11

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel 2.6.8.1. Affected by this issue is some unknown functionality of the file nls_ascii.c. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2005-0177. The attack needs to be approached within the local network. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel 2.6.8.1 (Operating System). This affects an unknown functionality of the file nls_ascii.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

nls_ascii.c in Linux before 2.6.8.1 uses an incorrect table size, which allows attackers to cause a denial of service (kernel crash) via a buffer overflow.

The bug was discovered 02/15/2005. The weakness was presented 02/15/2005 by Ogawa Hirofumi (Website). The advisory is shared at ubuntulinux.org. This vulnerability is uniquely identified as CVE-2005-0177 since 01/28/2005. The attack can only be done within the local network. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 17183 (RHEL 4 : kernel (RHSA-2005:092)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115055 (Linux Kernel Multiple Vulnerabilities (RHSA-2005:092-14)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at ftp.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (19364), Tenable (17183), SecurityFocus (BID 12598†), OSVDB (13848†) and Secunia (SA14295†). See VDB-1048, VDB-1047, VDB-1049 and VDB-1046 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 17183
Nessus Name: RHEL 4 : kernel (RHSA-2005:092)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: ftp.kernel.org

Timelineinfo

01/28/2005 🔍
02/15/2005 +18 days 🔍
02/15/2005 +0 days 🔍
02/15/2005 +0 days 🔍
02/15/2005 +0 days 🔍
02/16/2005 +1 days 🔍
02/18/2005 +2 days 🔍
02/22/2005 +4 days 🔍
02/28/2005 +6 days 🔍
03/07/2005 +7 days 🔍
05/23/2005 +77 days 🔍
07/01/2019 +5152 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: ubuntulinux.org
Researcher: Ogawa Hirofumi
Status: Not defined
Confirmation: 🔍

CVE: CVE-2005-0177 (🔍)
GCVE (CVE): GCVE-0-2005-0177
GCVE (VulDB): GCVE-100-1233

OVAL: 🔍

X-Force: 19364
SecurityFocus: 12598 - Linux Kernel Multiple Vulnerabilities
Secunia: 14295 - Linux Kernel Multiple Vulnerabilities, Moderately Critical
OSVDB: 13848 - Linux kernel nls_ascii.c buffer overflow
Vulnerability Center: 8085 - DoS in Linux Kernel 2.6.* via Buffer Overflow in \x27nls_ascii.c\x27, Low

See also: 🔍

Entryinfo

Created: 02/28/2005 10:12
Updated: 07/01/2019 15:04
Changes: 02/28/2005 10:12 (85), 07/01/2019 15:04 (5)
Complete: 🔍
Cache ID: 216:941:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!