7.5
CWE
20
Advisory Published
Updated

CVE-2019-12706: Cisco Email Security Appliance Filter Bypass Vulnerability

First published: Wed Oct 02 2019(Updated: )

A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the configured user filters on an affected device. The vulnerability exists because the affected software insufficiently validates certain incoming SPF messages. An attacker could exploit this vulnerability by sending a custom SPF packet to an affected device. A successful exploit could allow the attacker to bypass the configured header filters, which could allow malicious content to pass through the device.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Email Security Appliance Firmware<13.5.0

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 CVE-2019-12706?

    CVE-2019-12706 is a vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA).

  • What is the severity of CVE-2019-12706?

    The severity of CVE-2019-12706 is high with a CVSS score of 7.5.

  • How does CVE-2019-12706 affect Cisco Email Security Appliance?

    CVE-2019-12706 allows an unauthenticated, remote attacker to bypass the configured user filters on an affected device.

  • How can I fix CVE-2019-12706?

    To fix CVE-2019-12706, Cisco recommends upgrading the affected software to version 13.5.0 or later.

  • Where can I find more information about CVE-2019-12706?

    You can find more information about CVE-2019-12706 on the Cisco Security Advisory website.

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.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203