CVE-2018-0172
Description
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.
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Affected products
1Patches
Vulnerability mechanics
References
7- www.securityfocus.com/bid/103552nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1040591nvdThird Party AdvisoryVDB Entry
- ics-cert.us-cert.gov/advisories/ICSA-18-107-04nvdThird Party AdvisoryUS Government Resource
- ics-cert.us-cert.gov/advisories/ICSA-18-107-05nvdThird Party AdvisoryUS Government Resource
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1nvdVendor Advisory
- www.tenable.com/security/research/tra-2018-06nvdThird Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
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