VulnerabilityModified

CVE-2018-0315

CRITICAL 9.8EPSS 7.77%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (7.77%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability in the authentication, authorization, and accounting (AAA) security services of Cisco IOS XE Software could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device or cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incorrect memory operations that the affected software performs when the software parses a username during login authentication. An attacker could exploit this vulnerability by attempting to authenticate to an affected device. A successful exploit could allow the attacker to execute arbitrary code on the affected device or cause the affected device to reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are running Cisco IOS XE Software Release Fuji 16.7.1 or Fuji 16.8.1 and are configured to use AAA for login authentication. Cisco Bug IDs: CSCvi25380.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 7.77% probability · 94th percentile
CISA KEV: Not listed
Weakness: CWE-119
Affected: cisco/ios xe
Source: psirt@cisco.com

References

http://www.securityfocus.com/bid/104410Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041086Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-aaaVendor Advisory
http://www.securityfocus.com/bid/104410Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041086Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-aaaVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.