Symantec Endpoint Detection and Response XSS

Endpoint Detection and Response

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1502

02 March 2020

06 January 2020

CLOSED

MEDIUM

4.7

SUMMARY

 

Symantec has released an update to address an issue that was discovered in the Symantec Endpoint Detection and Response (SEDR) product.

AFFECTED PRODUCTS

 

Symantec Endpoint Detection and Response (SEDR)

CVE

Affected Version(s)

Remediation

CVE-2019-19547​

Prior to 4.3.0

Upgrade to 4.3.0

 

ISSUES

 

CVE-2019-19547​

Severity/CVSSv3:

Medium / 4.7 AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

References:

Impact:

Security Focus: BID 111367  / NVD: CVE-2019-19547

XSS

Description:

Symantec Endpoint Detection and Response (SEDR), prior to 4.3.0, may be susceptible to a cross site scripting (XSS) issue. XSS is a type of issue that can enable attackers to inject client-side scripts into web pages viewed by other users. An XSS vulnerability may be used by attackers to potentially bypass access controls such as the same-origin policy.

 

MITIGATION

 

A Symantec Endpoint Detection and Response (SEDR) update, version 4.3.0 has been made available that addresses the listed issue. Note that the latest Symantec Endpoint Detection and Response releases and patches are available to customers through normal support channels.

Symantec has also created additional detections and protections which are in place and is continuing to monitor any attempts of this exploit against our products. At this time, there is no evidence of any attempts at this exploit in the wild.

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

 

  • CVE-2019-19547: Bencherchali Nasreddine, ELIT Security Team | <www.elit.dz>

REVISION

 

1/14/2020 - Minor edit to acknowledgements