Linux Kernel 2.6 restore_sigcontext input validation

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel 2.6. This vulnerability affects the function restore_sigcontext. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2005-1761. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel 2.6 (Operating System). This affects the function restore_sigcontext. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

Linux kernel 2.6 and 2.4 on the IA64 architecture allows local users to cause a denial of service (kernel crash) via ptrace and the restore_sigcontext function.

The bug was discovered 06/23/2005. The weakness was released 08/05/2005 (Website). The advisory is shared at novell.com. This vulnerability is uniquely identified as CVE-2005-1761 since 05/31/2005. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 43 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 21943 (CentOS 4 : kernel (CESA-2005:514)), 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 117852 (CentOS Security Update for Kernel (CESA-2005:663)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (21139), Tenable (21943), SecurityFocus (BID 14051†), OSVDB (17479†) and Secunia (SA17002†). Entries connected to this vulnerability are available at VDB-1234, VDB-1288, VDB-1289 and VDB-1290. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.6

VulDB Base Score: 4.0
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 21943
Nessus Name: CentOS 4 : kernel (CESA-2005:514)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 56471
OpenVAS Name: Debian Security Advisory DSA 1018-1 (kernel-source-2.4.27)
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: 🔍

Timelineinfo

05/31/2005 🔍
06/23/2005 +23 days 🔍
06/23/2005 +0 days 🔍
06/24/2005 +1 days 🔍
07/11/2005 +17 days 🔍
08/05/2005 +25 days 🔍
08/05/2005 +0 days 🔍
09/29/2005 +55 days 🔍
10/05/2005 +6 days 🔍
07/05/2006 +273 days 🔍
03/11/2015 +3171 days 🔍
06/02/2019 +1544 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: novell.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2005-1761 (🔍)
GCVE (CVE): GCVE-0-2005-1761
GCVE (VulDB): GCVE-100-25941

OVAL: 🔍

X-Force: 21139
SecurityFocus: 14051 - Linux Kernel 64 Bit AR-RSC Register Access Validation Vulnerability
Secunia: 17002 - Red Hat update for kernel, Moderately Critical
OSVDB: 17479 - CVE-2005-1761 - Linux - Denial of Service Issue
SecurityTracker: 1014275
Vulnerability Center: 8521 - Elevated Privileges for Local Linux Users via restore_sigcontext() Access Control Bug, Low
Vupen: ADV-2005-1878

See also: 🔍

Entryinfo

Created: 03/11/2015 23:39
Updated: 06/02/2019 22:27
Changes: 03/11/2015 23:39 (76), 06/02/2019 22:27 (14)
Complete: 🔍
Cache ID: 216::103

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