7.5

CVE-2018-5733

A malicious client can overflow a reference counter in ISC dhcpd

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Isc ≫ Dhcp Version >= 4.2.0 <= 4.2.8
Isc ≫ Dhcp Version >= 4.3.0 <= 4.3.6
Isc ≫ Dhcp Version 4.1-esv Update -
Isc ≫ Dhcp Version 4.1-esv Update r1
Isc ≫ Dhcp Version 4.1-esv Update r10
Isc ≫ Dhcp Version 4.1-esv Update r10_b1
Isc ≫ Dhcp Version 4.1-esv Update r10_rc1
Isc ≫ Dhcp Version 4.1-esv Update r11
Isc ≫ Dhcp Version 4.1-esv Update r11_b1
Isc ≫ Dhcp Version 4.1-esv Update r11_rc1
Isc ≫ Dhcp Version 4.1-esv Update r11_rc2
Isc ≫ Dhcp Version 4.1-esv Update r12
Isc ≫ Dhcp Version 4.1-esv Update r12_b1
Isc ≫ Dhcp Version 4.1-esv Update r12_p1
Isc ≫ Dhcp Version 4.1-esv Update r13
Isc ≫ Dhcp Version 4.1-esv Update r13_b1
Isc ≫ Dhcp Version 4.1-esv Update r14
Isc ≫ Dhcp Version 4.1-esv Update r14_b1
Isc ≫ Dhcp Version 4.1-esv Update r15
Isc ≫ Dhcp Version 4.1-esv Update r2
Isc ≫ Dhcp Version 4.1-esv Update r3
Isc ≫ Dhcp Version 4.1-esv Update r3_b1
Isc ≫ Dhcp Version 4.1-esv Update r4
Isc ≫ Dhcp Version 4.1-esv Update r5
Isc ≫ Dhcp Version 4.1-esv Update r5_b1
Isc ≫ Dhcp Version 4.1-esv Update r5_rc1
Isc ≫ Dhcp Version 4.1-esv Update r5_rc2
Isc ≫ Dhcp Version 4.1-esv Update r6
Isc ≫ Dhcp Version 4.1-esv Update r7
Isc ≫ Dhcp Version 4.1-esv Update r8
Isc ≫ Dhcp Version 4.1-esv Update r8_b1
Isc ≫ Dhcp Version 4.1-esv Update r8_rc1
Isc ≫ Dhcp Version 4.1-esv Update r9
Isc ≫ Dhcp Version 4.1-esv Update r9_b1
Isc ≫ Dhcp Version 4.1-esv Update r9_rc1
Isc ≫ Dhcp Version 4.1-esv Update rc1
Isc ≫ Dhcp Version 4.1.0 Update -
Isc ≫ Dhcp Version 4.4.0
Canonical ≫ Ubuntu Linux Version 14.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 16.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 17.10
Debian ≫ Debian Linux Version 7.0
Debian ≫ Debian Linux Version 8.0
Debian ≫ Debian Linux Version 9.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 20.24% 0.971
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NIST 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
ISC 5.9 2.2 3.6
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

https://usn.ubuntu.com/3586-1/
Third Party Advisory
https://www.debian.org/security/2018/dsa-4133
Third Party Advisory
http://www.securityfocus.com/bid/103188
Third Party Advisory
VDB Entry
http://www.securitytracker.com/id/1040437
Third Party Advisory
VDB Entry
https://access.redhat.com/errata/RHSA-2018:0469
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0483
Third Party Advisory
https://kb.isc.org/docs/aa-01567
Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html
Third Party Advisory
https://usn.ubuntu.com/3586-2/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20250425-0010/