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AUSCERT External Security Bulletin Redistribution
ESB-2020.0140
Symantec Endpoint Detection and Response XSS
14 January 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Symantec Endpoint Detection and Response
Publisher: Symantec
Operating System: Windows
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-19547
Original Bulletin:
http://support.symantec.com/us/en/article.SYMSA1502.html
- --------------------------BEGIN INCLUDED TEXT--------------------
Symantec Endpoint Detection and Response XSS
SYMSA1502
Last Updated January 13, 2020
Initial Publication Date January 06, 2020
o Status: Closed
o Severity: Medium
o CVSS Base Score: 4.7
Summary:
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/ |Medium / 4.7 AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N |
|CVSSv3: | |
+------------+----------------------------------------------------------------+
|References: |Security Focus: BID 111367 / NVD: CVE-2019-19547 |
| | |
|Impact: |XSS |
+------------+----------------------------------------------------------------+
| |Symantec Endpoint Detection and Response (SEDR), prior to 4.3.0,|
| |may be susceptible to a cross site scripting (XSS) issue. XSS is|
|Description:|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:
o Restrict access to administrative or management systems to authorized
privileged users.
o Restrict remote access to trusted/authorized systems only.
o Run under the principle of least privilege, where possible, to limit the
impact of potential exploit.
o Keep all operating systems and applications current with vendor patches.
o 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.
o 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:
o CVE-2019-19547: Bencherchali Nasreddine | <www.elit.dz>
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