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CVE-2018-5733
Published: Jan 16, 2019
Modified: Apr 25, 2025
PUBLISHED
CVSS v3.0
5.9
MEDIUM
Description
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.
| Vendor | Product | Versions |
|---|---|---|
ISC | ISC DHCP | affected ISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0 |
CVSS v3.0 Details
CVSS v3.0 Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
References
https://kb.isc.org/docs/aa-01567
x_refsource_CONFIRM
RHSA-2018:0469
vendor-advisory
x_refsource_REDHAT
DSA-4133
vendor-advisory
x_refsource_DEBIAN
USN-3586-2
vendor-advisory
x_refsource_UBUNTU
RHSA-2018:0483
vendor-advisory
x_refsource_REDHAT
USN-3586-1
vendor-advisory
x_refsource_UBUNTU
103188
vdb-entry
x_refsource_BID
1040437
vdb-entry
x_refsource_SECTRACK
[debian-lts-announce] 20180322 [SECURITY] [DLA 1313-1] isc-dhcp security update
mailing-list
x_refsource_MLIST
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