SecurityTracker.com
Keep Track of the Latest Vulnerabilities
with SecurityTracker!
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


Try our Premium Alert Service
 
Sign Up
Sign Up for Your FREE Weekly SecurityTracker E-mail Alert Summary
Instant Alerts
Buy our Premium Vulnerability Notification Service to receive customized, instant alerts
Affiliates
Put SecurityTracker Vulnerability Alerts on Your Web Site -- It's Free!
Partners
Become a Partner and License Our Database or Notification Service





Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel Extended BPF Verifier Stack Pointer Calculation Flaw Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1040058
SecurityTracker URL:  http://securitytracker.com/id/1040058
CVE Reference:   CVE-2017-17863   (Links to External Site)
Date:  Dec 26 2017
Impact:   Execution of arbitrary code via local system, Root access via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.9.x
Description:   A vulnerability was reported in the Linux kernel. A local user can obtain elevated privileges on the target system.

The Extended BPF verifier ('kernel/bpf/verifier.c') does not properly evaluate stack frame pointers. A local user can run a specially crafted application to trigger an integer overflow or memory access error to execute arbitrary code on the target system with elevated privileges.

Jann Horn reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   A proposed source code fix is available at:

https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-reject-out-of-bounds-stack-pointer-calculation.patch?h=stretch-security

Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Access control error, State error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 10 2018 (Ubuntu Issues Fix) Linux Kernel Extended BPF Verifier Stack Pointer Calculation Flaw Lets Local Users Gain Elevated Privileges
Ubuntu has issued a fix for Ubuntu Linux 17.10.



 Source Message Contents



[Original Message Not Available for Viewing]


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2018, SecurityGlobal.net LLC