A malicious client can overflow a reference counter in ISC dhcpd (ISC ISC DHCP)
At a glance
- Source
- NVD
- EPSS
- EPSS 20.24 % · percentile 97 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- isc
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-190 — Integer Overflow or Wraparound
References
- https://kb.isc.org/docs/aa-01567
- https://access.redhat.com/errata/RHSA-2018:0469
- https://www.debian.org/security/2018/dsa-4133
- https://usn.ubuntu.com/3586-2/
- https://access.redhat.com/errata/RHSA-2018:0483
- https://usn.ubuntu.com/3586-1/
- http://www.securityfocus.com/bid/103188
- http://www.securitytracker.com/id/1040437
- https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html
- https://security.netapp.com/advisory/ntap-20250425-0010/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | isc |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | MEDIUM 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · security-officer@isc.org (Secondary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2018-17502
- GCVE · GCVE-0-2018-5733
Affected configurations (NVD CPE)
cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:*≥ 4.2.0 ≤ 4.2.8cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:*≥ 4.3.0 ≤ 4.3.6cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r10_rc1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r11:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r12_p1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r13:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r13_b1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r14:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r14_b1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r15:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r7:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r8:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r8_b1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r8_rc1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r9:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r9_b1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:r9_rc1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1-esv:rc1:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.1.0:-:*:*:*:*:*:*cpe:2.3:a:isc:dhcp:4.4.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*- +15 more
Affected products
| 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 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |