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CVE-2017-3870

5.8 · MEDIUM

A vulnerability in the URL filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured URL filter rule.

Published Mar 17, 2017CWE-119EPSS 1.52%

Overview

CVE-2017-3870 is a medium-severity vulnerability. It was published on March 17, 2017 and has a CVSS 3.0 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability in the URL filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured URL filter rule. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA), both virtual and hardware appliances, that are configured with URL filters for email scanning. More Information: CSCvc69700. Known Affected Releases: 8.5.3-069 9.1.1-074 9.1.2-010.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refwww.securityfocus.com/bid/96907Refwww.securitytracker.com/id/1038043Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-wsaRefwww.securityfocus.com/bid/96907Refwww.securitytracker.com/id/1038043Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-wsa

How CyberStrike helps

Frequently asked questions

What is CVE-2017-3870?

CVE-2017-3870 is a medium-severity vulnerability. It was published on March 17, 2017 and has a CVSS 3.0 base score of 5.8 (MEDIUM).

How severe is CVE-2017-3870?

This vulnerability has a CVSS 3.0 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-3870?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2017-3870?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-3870 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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