Cisco · IOS and IOS XE Software
CVE-2018-0172
Cisco IOS and IOS XE Software Improper Input Validation Vulnerability
Was es ist
A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of option 82 information that it receives in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device. A successful exploit could allow the attacker to cause a heap overflow condition on the affected device, which will cause the device to reload and result in a DoS condition. Cisco Bug IDs: CSCvg62730.
CISA: A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow for denial-of-service (DoS).
Was zu tun ist
Apply updates per vendor instructions.
Frist für US-Bundesbehörden: 17. März 2022
- Zur CISA-Liste hinzugefügt
- 3. März 2022
- Veröffentlicht
- 28. März 2018
- Schweregrad
- Hoch 8,6 CVSS 3.1
- Wahrscheinlichkeit von Angriffen in den nächsten 30 Tagen (EPSS)
- 7,8% unter den obersten 5,4% aller bekannten Schwachstellen
- Schwachstellentyp
- CWE-20
- Mehr Details
- NVD · CVE.org · CISA
Alle Quellen (6)
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
- https://www.tenable.com/security/research/tra-2018-06
- http://www.securitytracker.com/id/1040591
- http://www.securityfocus.com/bid/103552
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
Weitere ausgenutzte Schwachstellen von Cisco
| Hinzugefügt | Schwachstelle | Produkt | Schweregrad | Angriffswahrscheinlichkeit |
|---|---|---|---|---|
| 19.04.2023 | SNMP Remote Code Execution | IOS and IOS XE Software | Hoch 8,8 | 21% |
| 03.03.2022 | IOS Software and Cisco IOS XE Software UDP Packet Processing Denial-of-Service | IOS and IOS XE Software | Hoch 7,5 | 6,2% |
| 03.03.2022 | IOS Software and Cisco IOS XE Software Denial-of-Service | IOS and IOS XE Software | Mittel 6,5 | 2,1% |
| 03.03.2022 | SNMP Remote Code Execution | IOS and IOS XE Software | Hoch 8,8 | 70% |
| 03.03.2022 | SNMP Remote Code Execution | IOS and IOS XE Software | Hoch 8,8 | 45% |
| 03.03.2022 | SNMP Remote Code Execution | IOS and IOS XE Software | Hoch 8,8 | 11% |
| 03.03.2022 | SNMP Remote Code Execution | IOS and IOS XE Software | Hoch 8,8 | 11% |
| 03.03.2022 | SNMP Remote Code Execution | IOS and IOS XE Software | Hoch 8,8 | 11% |
Quellen: Known Exploited Vulnerabilities (CISA, gemeinfrei), CVE records (cve.org) und EPSS (FIRST). Die Angriffswahrscheinlichkeit ist die EPSS-Schätzung, dass jemand in den nächsten 30 Tagen versucht, die Schwachstelle auszunutzen.