CVE-2013-5472

Severity: high (CVSS 7.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-09-27 · updated 2026-06-16
Weakness: CWE-20

Description

The NTP implementation in Cisco IOS 12.0 through 12.4 and 15.0 through 15.1, and IOS XE 2.1 through 3.3, does not properly handle encapsulation of multicast NTP packets within MSDP SA messages, which allows remote attackers to cause a denial of service (device reload) by leveraging an MSDP peer relationship, aka Bug ID CSCuc81226.

Affected products

Cisco IOS: 12.0, 12.1, 12.2, 12.3, 12.4, 15.0 (+1)
Cisco IOS XE: 2.1.0, 2.1.1, 2.1.2, 2.2.1, 2.2.2, 2.2.3 (+34)

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-ntp
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-ntp

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