PT-2013-5566 · Cisco · Cisco Ios

Published 2013-09-25 · Updated 2013-10-07 · CVE-2013-5479

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 12.2, 15.0 through 15.3

Description The DNS-over-TCP implementation in Cisco IOS, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream. The Cisco IOS Software implementation of the network address translation (NAT) feature contains vulnerabilities that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

Recommendations For versions 12.2, 15.0 through 15.3, update to a version that addresses these vulnerabilities, as software updates have been released by Cisco. At the moment, there is no information about other workarounds that mitigate these vulnerabilities.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2013-5479

Affected Products

Cisco Ios

References · 3

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-nat · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2013-5479 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-nat · Vendor Advisory