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Insecure Library Loading

Secunia Advisory SA7996

Red Hat Linux Kernel Updates
Secunia Advisory SA7996
Secunia VIM 4.0 - Free Trial
Release Date 2003-02-05
Last Update 2003-04-02
   
Popularity 8,932 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Exposure of system information
Exposure of sensitive information
Where From remote
Authentication level This information is available to Secunia VIM customers
   
Report reliability This information is available to Secunia VIM customers
Solution Status Vendor Patch
   
Systems affected This information is available to Secunia VIM customers
Approve distribution This information is available to Secunia VIM customers
   
Operating System
Red Hat Linux 7.1
Red Hat Linux 7.2
Red Hat Linux 7.3
Red Hat Linux 8.0

Secunia CVSS Score This information is available to Secunia VIM Customers
CVE Reference(s) CVE-2003-0001 CVSS score available to Secunia VIM customers
CVE-2003-0018 CVSS score available to Secunia VIM customers
  

Description

Red Hat has issued updated 2.4 kernel packages to fix two information disclosure vulnerabilities in Red Hat's version 2.4.18 of the kernel.

The first problem is caused by many ethernet NIC (Network Interface Card) device drivers padding frames with content from previous packets or kernel memory instead of using NULL-bytes. This may be exploited by malicious people to obtain potentially sensitive information by sending specially crafted packets to a vulnerable system.

The second problem lies in the ext2 file system's O_DIRECT routine used to remove the CPU and memory bandwidth spent when copying between the kernel cache and userspace memory. A user with write privileges to the file system is able to exploit the problem to read information from previously deleted files. Red Hat is not affected by this vulnerability by default since it the ext3 file system is used, which doesn't support O_DIRECT.


Solution
Updated packages:
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Red Hat Linux Kernel Updates
 
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