Symantec Endpoint Encryption Various Issues

Endpoint Encryption

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1420

05 March 2020

13 November 2017

CLOSED

MEDIUM

4.2

SUMMARY

 

Symantec has released an update to address two issues in the Symantec Endpoint Encryption product.

AFFECTED PRODUCTS

 

Symantec Endpoint Encryption (SEE)

CVE

Affected Version(s)

Remediation

CVE-2017-15525

CVE-2017-15526

Prior to 11.1.3MP1

Upgrade to 11.1.3MP1

 

ISSUES

 

CVE-2017-15525

Severity/CVSSv3:

Medium / 4.2 AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

References:

Impact:

Securityfocus: BID 101697  / NVD: CVE-2017-15525

Denial of service

Description:

A denial of service (DoS) attack is a type of attack whereby the perpetrator attempts to make a particular machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a specific host within a network. DoS attacks can occur when a system becomes flooded with specific network requests or subversive operations that can cause the resourced system to become unresponsive.

 

CVE-2017-15526

Severity/CVSSv3:

Low / 4.2 AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

References:

Impact:

Securityfocus: BID 101698  / NVD: CVE-2017-15526

Privilege escalation

Description:

Symantec Endpoint Encryption can be susceptible to a null pointer de-reference issue, which can result in a NullPointerException that can lead to a privilege escalation scenario. A null-pointer dereference takes place when a pointer with a value of NULL is used as though it pointed to a valid memory area.

 

MITIGATION

 

These issues were validated by the product team engineers. A Symantec Endpoint Encryption update, version SEE v11.1.3MP1, has been released which addresses the aforementioned issues. Note that the latest releases and patches for Symantec Endpoint Encryption are available to customers through normal support channels. At this time, Symantec is not aware of any exploitations or adverse customer impact from these issues.

 

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 for 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

 

  • Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-15525)
  • Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-15526)