Rewindex/CVEs

CVE-2018-0172: Cisco IOS and IOS XE Software Improper Input Validation Vulnerability

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.

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H · CWE-20

Status incidents that name it

No tracked status incident names this CVE.

Affected vendors and products

Cisco IOS and IOS XE

References

• CVE record on cve.org (opens in new tab)
• NVD entry (opens in new tab)
• ics-cert.us-cert.gov/advisories/ICSA-18-107-04 (opens in new tab)
• ics-cert.us-cert.gov/advisories/ICSA-18-107-05 (opens in new tab)
• tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr… (opens in new tab)
• www.tenable.com/security/research/tra-2018-06 (opens in new tab)
• www.securityfocus.com/bid/103552 (opens in new tab)
• www.securitytracker.com/id/1040591 (opens in new tab)

All CVEsMarkdownJSON

• CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
• This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
• Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
• EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)