SB2022071116 - Security restrictions bypass in F5 BIG-IQ Centralized Management (Linux kernel component)

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Main Vulnerability Database SB2022071116

SB2022071116 - Security restrictions bypass in F5 BIG-IQ Centralized Management (Linux kernel component)

Published: July 11, 2022

Security Bulletin ID SB2022071116
Severity
Low
Patch available
NO
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Improper access control (CVE-ID: CVE-2018-18281)

The vulnerability allows a local user to bypass certain security restrictions.

The vulnerability exists due to improper access restrictions to memory when performing TLB flushes after dropping pagetable locks with mremap() syscall, A local user can access a physical page of a stale TLB entry after ftruncate() syscall is called to remove entries from the pagetables of a task that is in the middle of mremap() syscall.

Successful exploitation of the vulnerability may allow an attacker to gain access to sensitive information, stored in process memory.


Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References