Allocation of Resources Without Limits or Throttling Affecting freebsd package, versions [,12.0.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
3.23% (87th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Allocation of Resources Without Limits or Throttling vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-UNMANAGED-FREEBSD-2383093
  • published26 Jan 2022
  • disclosed9 Aug 2018
  • creditUnknown

Introduced: 9 Aug 2018

CVE-2018-6922  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade freebsd to version 12.0.0 or higher.

Overview

Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling. One of the data structures that holds TCP segments in all versions of FreeBSD prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, and 10.4-RELEASE-p10 uses an inefficient algorithm to reassemble the data. This causes the CPU time spent on segment processing to grow linearly with the number of segments in the reassembly queue. An attacker who has the ability to send TCP traffic to a victim system can degrade the victim system's network performance and/or consume excessive CPU by exploiting the inefficiency of TCP reassembly handling, with relatively small bandwidth cost.

References

CVSS Base Scores

version 3.1