SB2017032904 - Ubuntu update for Linux kernel 

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Main Vulnerability Database SB2017032904

SB2017032904 - Ubuntu update for Linux kernel

Published: March 29, 2017 Updated: October 11, 2021

Security Bulletin ID SB2017032904
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Buffer overflow (CVE-ID: CVE-2017-7184)

The vulnerability allows a local attacker to execute arbitrary code on the target system with escalated privileges.

The vulnerability exists due to boundary error in xfrm_replay_verify_len() function in net/xfrm/xfrm_user.c in Linux kernel when validating data after an XFRM_MSG_NEWAE update. A local use can trigger heap-based buffer overflow by leveraging the CAP_NET_ADMIN capability and execute arbitrary code on the target system with root privileges.

Successful exploitation of this vulnerability may allow an attacker to compromise vulnerable system.

This vulnerability was demonstrated during the Pwn2Own competition at CanSecWest 2017 for the Ubuntu 16.10 linux-image-* package 4.8.0.41.52.


Remediation

Install update from vendor's website.

References