Cisco Small Business 300 Series Managed Switches DHCP Denial of Service Vulnerability (Cisco Cisco Small Business 300 Series Managed Switches)
At a glance
- Source
- NVD
- EPSS
- EPSS 2.13 % · percentile 82 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the interactions between the DHCP and TFTP features for Cisco Small Business 300 Series (Sx300) Managed Switches could allow an unauthenticated, remote attacker to cause the device to become low on system memory, which in turn could lead to an unexpected reload of the device and result in a denial of service (DoS) condition on an affected device. The vulnerability is due to a failure to free system memory when an unexpected DHCP request is received. An attacker could exploit this vulnerability by sending a crafted DHCP packet to the targeted device. A successful exploit could allow the attacker to cause an unexpected reload of the device.
Weaknesses (CWE)
- CWE-400 — Uncontrolled Resource Consumption
- CWE-770 — Allocation of Resources Without Limits or Throttling
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 6.8 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H | cisco |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | MEDIUM 6.8 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · psirt@cisco.com (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-2019-10371
- GCVE · GCVE-0-2019-1814
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:sf302-08pp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf302-08mpp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-10pp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-10mpp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf300-24pp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf300-48pp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-28pp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf300-08_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf300-48p_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-10mp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-10p_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-10_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-28p_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf300-24p_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf302-08mp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-28_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf300-48_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-20_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf302-08p_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-52_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf300-24_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf302-08_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sf300-24mp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-10sfp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-28mp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-52p_firmware:*:*:*:*:*:*:*:*< 1.4.10.6cpe:2.3:o:cisco:sg300-52mp_firmware:*:*:*:*:*:*:*:*< 1.4.10.6
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco Small Business 300 Series Managed Switches | affected 1.4.0.88 |
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 |