CVE-2013-5479 — HIGH (7.8) — White Hats Nepal

Vulnerability Description

The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCtn53730.

CVSS Score

7.8

HIGH

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

Confidentiality

NONE

Integrity

NONE

Availability

COMPLETE

Affected Products

Vendor	Product	Versions
Cisco	Ios	12.2

Related Weaknesses (CWE)

CWE-20

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20Vendor Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20Vendor Advisory

FAQ

What is CVE-2013-5479?

CVE-2013-5479 is a vulnerability with a CVSS score of 7.8 (HIGH). The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka B...

How severe is CVE-2013-5479?

CVE-2013-5479 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2013-5479?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios.