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CVE-2013-5537

7.8 · HIGH

The web framework on Cisco Web Security Appliance (WSA), Email Security Appliance (ESA), and Content Security Management Appliance (SMA) devices does not properly manage the state of HTTP and HTTPS…

Published Oct 24, 2013ciscoCWE-20EPSS 1.33%

Overview

CVE-2013-5537 is a high-severity vulnerability affecting cisco web_security_appliance. It was published on October 24, 2013 and has a CVSS 2.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The web framework on Cisco Web Security Appliance (WSA), Email Security Appliance (ESA), and Content Security Management Appliance (SMA) devices does not properly manage the state of HTTP and HTTPS sessions, which allows remote attackers to cause a denial of service (management GUI outage) via multiple TCP connections, aka Bug IDs CSCuj59411, CSCuf89818, and CSCuh05635.

Remediation

Check the references section for vendor advisories and patches from cisco. Update web_security_appliance to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Reftools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5537Reftools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5537

How CyberStrike helps

Frequently asked questions

What is CVE-2013-5537?

CVE-2013-5537 is a high-severity vulnerability affecting cisco web_security_appliance. It was published on October 24, 2013 and has a CVSS 2.0 base score of 7.8 (HIGH).

How severe is CVE-2013-5537?

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-5537?

Check the references section for vendor advisories and patches from cisco. Update web_security_appliance to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-5537?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-5537 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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