CVE-2013-5479: Input Validation
First published: Fri Sep 27 2013(Updated: )
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.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS | =12.2 | |
| Cisco IOS | =15.0 | |
| Cisco IOS | =15.1 | |
| Cisco IOS | =15.2 | |
| Cisco IOS | =15.3 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2013-5479?
CVE-2013-5479 has a high severity rating as it can lead to a denial of service condition.
How do I fix CVE-2013-5479?
To mitigate CVE-2013-5479, upgrade to a fixed version of Cisco IOS or disable NAT if possible.
Which Cisco IOS versions are affected by CVE-2013-5479?
CVE-2013-5479 affects Cisco IOS versions 12.2, 15.0, 15.1, 15.2, and 15.3.
Can CVE-2013-5479 be exploited remotely?
Yes, CVE-2013-5479 can be exploited remotely via a specially crafted IPv4 DNS TCP stream.
What impact does CVE-2013-5479 have on affected systems?
Exploitation of CVE-2013-5479 can cause the affected Cisco devices to reload, resulting in service interruptions.
- collector/nvd-index
- agent/type
- agent/softwarecombine
- agent/weakness
- agent/severity
- agent/references
- agent/author
- agent/tags
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/source
- vendor/cisco
- canonical/cisco ios
- version/cisco ios/12.2
- version/cisco ios/15.0
- version/cisco ios/15.1
- version/cisco ios/15.2
- version/cisco ios/15.3