Integer Overflow or Wraparound Affecting dhcp package, versions [4.2.0,4.2.8][4.3.0,4.4.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
20.24% (98th percentile)

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  • Snyk IDSNYK-UNMANAGED-DHCP-2374404
  • published26 Jan 2022
  • disclosed16 Jan 2019
  • creditUnknown

Introduced: 16 Jan 2019

CVE-2018-5733  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade dhcp to version 4.4.0 or higher.

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0.

References

CVSS Base Scores

version 3.1