Linux Kernel 2.6.26.3 proc_do_xprt 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.
8.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 2.6.26.3 and classified as problematic. The impacted element is the function proc_do_xprt. The manipulation results in memory corruption. This vulnerability was named CVE-2008-3911. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.26.3 (Operating System). It has been classified as critical. Affected is the function proc_do_xprt. 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. CVE summarizes:

The proc_do_xprt function in net/sunrpc/sysctl.c in the Linux kernel 2.6.26.3 does not check the length of a certain buffer obtained from userspace, which allows local users to overflow a stack-based buffer and have unspecified other impact via a crafted read system call for the /proc/sys/sunrpc/transports file.

The bug was discovered 08/30/2008. The weakness was presented 09/04/2008 (Website). The advisory is shared for download at xforce.iss.net. This vulnerability is traded as CVE-2008-3911 since 09/04/2008. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

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 $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 40010 (openSUSE Security Update : kernel (kernel-270)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116022 (SUSE Security Announcement: Linux Kernel (SUSE-SA:2008:053)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (45136), Tenable (40010), SecurityFocus (BID 31937†), OSVDB (48471†) and Vulnerability Center (SBV-19953†). Once again VulDB remains the best source 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: 9.3
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.3
VulDB Temp Score: 8.9
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: 40010
Nessus Name: openSUSE Security Update : kernel (kernel-270)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850035
OpenVAS Name: SurgeMail SurgeWeb Cross Site Scripting Vulnerability
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

04/09/2008 🔍
07/13/2008 +95 days 🔍
08/30/2008 +48 days 🔍
09/04/2008 +5 days 🔍
09/04/2008 +0 days 🔍
09/04/2008 +0 days 🔍
10/22/2008 +48 days 🔍
10/27/2008 +5 days 🔍
11/09/2008 +13 days 🔍
07/21/2009 +254 days 🔍
03/17/2015 +2065 days 🔍
05/26/2025 +3723 days 🔍

Sourcesinfo

Vendor: kernel.org

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

CVE: CVE-2008-3911 (🔍)
GCVE (CVE): GCVE-0-2008-3911
GCVE (VulDB): GCVE-100-43908
X-Force: 45136
SecurityFocus: 31937 - Linux Kernel 'proc_do_xprt()' Local Buffer Overflow Vulnerability
OSVDB: 48471 - CVE-2008-3911 - Linux - Kernel - Buffer Overflow Issue
Vulnerability Center: 19953 - Linux Kernel <=2.6.26.3 proc_do_xprt Function in net/sunrpc/sysctl.c Allows Local Buffer Overflow, High

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/26/2025 07:43
Changes: 03/17/2015 16:11 (72), 08/20/2019 13:00 (7), 05/26/2025 07:43 (20)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!