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CVE-2018-12243

8.8 · HIGH

The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external entity (XXE) exploit, which is a type of issue where XML input containing a reference to an external enti…

Published Sep 19, 2018CWE-611EPSS 0.77%

Overview

CVE-2018-12243 is a high-severity vulnerability. It was published on September 19, 2018 and has a CVSS 3.0 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external entity (XXE) exploit, which is a type of issue where XML input containing a reference to an external entity is processed by a weakly configured XML parser. The attack uses file URI schemes or relative paths in the system identifier to access files that should not normally be accessible.

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/105330Refsupport.symantec.com/en_US/article.SYMSA1461.htmlRefwww.securityfocus.com/bid/105330Refsupport.symantec.com/en_US/article.SYMSA1461.html

How CyberStrike helps

Frequently asked questions

What is CVE-2018-12243?

CVE-2018-12243 is a high-severity vulnerability. It was published on September 19, 2018 and has a CVSS 3.0 base score of 8.8 (HIGH).

How severe is CVE-2018-12243?

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-12243?

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-2018-12243?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-12243 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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