7.8
CWE
119
Advisory Published
Updated

CVE-2013-1147: Buffer Overflow

First published: Thu Mar 28 2013(Updated: )

The Protocol Translation (PT) functionality in Cisco IOS 12.3 through 12.4 and 15.0 through 15.3, when one-step port-23 translation or a Telnet-to-PAD ruleset is configured, does not properly validate TCP connection information, which allows remote attackers to cause a denial of service (device reload) via an attempted connection to a PT resource, aka Bug ID CSCtz35999.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS=12.3
Cisco IOS=12.4
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.

Frequently Asked Questions

  • What is the severity of CVE-2013-1147?

    CVE-2013-1147 is classified as a denial of service vulnerability that affects multiple versions of Cisco IOS.

  • How do I fix CVE-2013-1147?

    To mitigate CVE-2013-1147, users should upgrade to a supported version of Cisco IOS that has addressed the vulnerability.

  • Which Cisco IOS versions are affected by CVE-2013-1147?

    CVE-2013-1147 affects Cisco IOS versions 12.3, 12.4, 15.0, 15.1, 15.2, and 15.3.

  • Can CVE-2013-1147 be exploited remotely?

    Yes, CVE-2013-1147 can be exploited remotely, allowing attackers to cause a denial of service.

  • What functionalities are impacted by CVE-2013-1147?

    CVE-2013-1147 affects the Protocol Translation functionality within affected Cisco IOS versions, particularly when specific Telnet configurations are used.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203