Linux Kernel 2.6.23 parisc_show_stack 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.
5.9$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel 2.6.23. This affects the function parisc_show_stack. This manipulation causes memory corruption. This vulnerability is registered as CVE-2008-5395. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel 2.6.23 (Operating System) and classified as problematic. Affected by this vulnerability is the function parisc_show_stack. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

The parisc_show_stack function in arch/parisc/kernel/traps.c in the Linux kernel before 2.6.28-rc7 on PA-RISC allows local users to cause a denial of service (system crash) via vectors associated with an attempt to unwind a stack that contains userspace addresses.

The bug was discovered 07/29/2008. The weakness was published 12/08/2008 with Dell (Website). It is possible to read the advisory at xforce.iss.net. This vulnerability is known as CVE-2008-5395 since 12/08/2008. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 426 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 38668 (Debian DSA-1787-1 : linux-2.6.24 - denial of service/privilege escalation/information leak), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116466 (Debian Security Update for Linux Kernel (DSA-1794-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 6 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (47075), Tenable (38668), SecurityFocus (BID 32636†), OSVDB (50420†) and Secunia (SA32933†). Similar entries are available at VDB-45624, VDB-47848, VDB-47604 and VDB-47248. Statistical analysis made it clear that VulDB provides the best quality for 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: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
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: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 38668
Nessus Name: Debian DSA-1787-1 : linux-2.6.24 - denial of service/privilege escalation/information leak
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63939
OpenVAS Name: Debian Security Advisory DSA 1787-1 (linux-2.6.24)
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

10/09/2007 🔍
07/29/2008 +294 days 🔍
12/04/2008 +128 days 🔍
12/04/2008 +0 days 🔍
12/08/2008 +4 days 🔍
12/08/2008 +0 days 🔍
12/08/2008 +0 days 🔍
12/08/2008 +0 days 🔍
05/02/2009 +145 days 🔍
05/04/2009 +2 days 🔍
05/11/2009 +7 days 🔍
03/17/2015 +2136 days 🔍
05/25/2025 +3722 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: xforce.iss.net
Organization: Dell
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-5395 (🔍)
GCVE (CVE): GCVE-0-2008-5395
GCVE (VulDB): GCVE-100-45355

OVAL: 🔍

X-Force: 47075
SecurityFocus: 32636 - Linux Kernel 'parisc_show_stack()' Local Denial of Service Vulnerability
Secunia: 32933 - Linux Kernel Denial of Service Vulnerabilities, Not Critical
OSVDB: 50420 - CVE-2008-5395 - Linux - Kernel - Denial-Of-Service Issue
Vulnerability Center: 21961 - Linux Kernel < 2.6.28-rc7 on PA-RISC parisc_show_stack Function Local DoS Vulnerability, Low

See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/25/2025 22:24
Changes: 03/17/2015 16:11 (81), 09/03/2019 10:01 (5), 05/25/2025 22:24 (20)
Complete: 🔍
Cache ID: 216:877:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!