Vulnerability in Cisco iOS
CVE-2017-3864
A vulnerability in the DHCP client implementation of Cisco IOS (12.2, 12.4, and 15.0 through 15.6) and Cisco IOS XE (3.3 through 3.7) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability occurs during the parsing of a crafted DHCP packet. An attacker could exploit this vulnerability by sending crafted DHCP packets to an affected device that is configured as a DHCP client. A successful exploit could allow the attacker to cause a reload of an affected device, resulting in a DoS condition. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS or IOS XE Software and using a specific DHCP client configuration. Cisco Bug IDs: CSCuu43892.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Cisco iOS — versions 12.2, 12.4
- Cisco iOS Xe
- Cisco iOS And Xe — versions Cisco IOS and IOS XE
Weakness classification (CWE)
References
- www.securityfocus.com/bid/97012 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1038103 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322… (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-3864?
- CVE-2017-3864 is a high-severity vulnerability in Cisco iOS, classified under CWE-399. CVSS score: 8.6/10. Published 2017-03-22.
- How severe is CVE-2017-3864?
- High severity. CVSS v3 base score is 8.6 out of 10.