Symantec Messaging Gateway Directory Traversal

SUMMARY

Symantec has released an update to address one issue in the Symantec Messaging Gateway product.

AFFECTED PRODUCTS

Symantec Messaging Gateway (SMG)

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CVE

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Affected Version(s)

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Remediation

CVE-2017-15532

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Prior to 10.6.4

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Upgrade to 10.6.4

ISSUES

CVE-2017-15532

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Severity/CVSSv3:

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Medium / 5.7 AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References:

Impact:

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Securityfocus: BID 102096 / NVD: CVE-2017-15532

Directory traversal

Description:

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Symantec Messaging Gateway may be susceptible to a path traversal attack (also known as directory traversal). These types of attacks aim to access files and directories that are stored outside the web root folder. By manipulating variables, it may be possible to access arbitrary files and directories stored on the file system including application source code or configuration and critical system files.

MITIGATION

This issue was validated by the product team engineers. A Symantec Messaging Gateway update, version 10.6.4, has been released which addresses the aforementioned issue. Note that the latest Symantec Messaging Gateway release and patches are available to customers through normal support channels. At this time, Symantec is not aware of any exploitations or adverse customer impact from this issue.

BEST PRACTICES

Symantec recommends the following measures to reduce risk of attack:

• Restrict access to administrative or management systems to authorized privileged users.
• Restrict remote access to trusted/authorized systems only.
• Run under the principle of least privilege, where possible, to limit the impact of potential exploit.
• Keep all operating systems and applications current with vendor patches.
• Follow a multi-layered approach to security. At a minimum, run both firewall and anti-malware applications to provide multiple points of detection and protection to both inbound and outbound threats.
• Deploy network and host-based intrusion detection systems to monitor network traffic for signs of anomalous or suspicious activity. This may aid in the detection of attacks or malicious activity related to the exploitation of latent vulnerabilities.

ACKNOWLEDGEMENTS

• rgod working with Trend Micro’s Zero Day Initiative (CVE-2017-15532)