PT-2015-4731 · Cisco · Cisco Ios

Published 2015-01-27 · Updated 2017-09-08 · CVE-2015-0586

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Cisco IOS versions 15.3(100)M and earlier

Description The issue is related to the Network-Based Application Recognition (NBAR) protocol implementation, which allows remote attackers to cause a denial of service (DoS) condition by sending IPv4 packets. This can lead to the NBAR process hanging, requiring a router restart to recover. An attacker may need to gather additional information about the targeted device to exploit this issue.

Recommendations For Cisco IOS versions 15.3(100)M and earlier, update to a newer version that includes the fix for this issue, as confirmed by Cisco in their security notice. As a temporary workaround, consider restricting access to the NBAR process to minimize the risk of exploitation.

Fix

DoS

Weakness Enumeration

CWE-399

Related Identifiers

CVE-2015-0586

Affected Products

Cisco Ios

References · 7

• http://tools.cisco.com/security/center/viewAlert.x?alertId=37171 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-0586 · Security Note
• http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2015-0586 · Vendor Advisory
• http://securitytracker.com/id/1031659 · Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/Cisco-SA-20150127-CVE-2015-0586 · Note
• http://securityfocus.com/bid/72309 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/100660 · Note