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Security advisories | Mar 02, 2021

CANVAS Exploit Pack Leaked

THE THREAT

The exploit pack CANVAS, from security services provider Immunity, has been leaked online. CANVAS version 7.26 (released in September 2020) contains over 800 different exploits for a wide variety of vulnerabilities.

This leak decreases the complexity of developing and running exploits, empowering low-skilled actors with “point and click attacks.” Overall, this leak does not introduce any zero-day exploits, however the risk of exploitation for known vulnerabilities is greater due to the availability of exploit code in the leaked CANVAS product. Organizations are encouraged to review the targeted CVEs below and ensure patches or mitigations are in place.

What we’re doing about it

  • MVS has plugins in place to identify all vulnerabilities listed in the additional details section
    • MVS customers seeking assistance with their review or scans, please contact your MVS consultant or the eSentire Security Operations Center (SOC)
  • eSentire security teams continue to track this topic for additional details and detection opportunities

What you should do about it

  • Ensure systems are fully up-to-date to mitigate against known exploits
  • MVS customers should review scan reports for the presence of vulnerable systems. These reports can be reviewed by accessing the latest vulnerability reports on the eSentire Insight Portal or by accessing their Tenable.io instance. Non-MVS customers should review vulnerability scan reports for the presence of vulnerable systems.

Additional information

Exploits for the following vulnerabilities were added in CANVAS versions 7.25 (released February 2020) and 7.26 (released September 2020). Organizations are strongly encouraged to ensure that all the following vulnerabilities are patched. Externally facing products and high rated vulnerabilities should be prioritized for patching.

CVE

Product

Exploit

CVSS 3.0 Rating

CVE-2020-0796

Microsoft SMBv3

SMBGHOST

10

CVE-2019-1003029

Jenkins Script Security Plugin

jenkins_checkscript_rce

9.9

CVE-2018-1000861

Jenkins Openshift Container Platform

jenkins_checkscript_rce

9.8

CVE-2019-16759

Redhat vBulletin

vbulletin_widget_rce

9.8

CVE-2019-3396

Atlassian Confluence Server

confluence_macro_lfi

9.8

CVE-2020-0618

Microsoft SQL Server Reporting Services

ssrs_viewstate_rce

8.8

CVE-2020-0688

Microsoft Exchange

owa_rce

8.8

CVE-2019-1003005

Jenkins Script Security Plugin

jenkins_checkscript_rce

8.8

CVE-2019-0859

Microsoft Windows

menu_confusion_lpe

7.8

CVE-2019-1253

Microsoft Windows AppX Deployment Server

alpc_appxedge_lpe

7.8

CVE-2019-1315

Microsoft Windows Error Reporting manager

error_reporting_lpe

7.2