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Security researchers Raphaël Arrouas and Stephane Grundschober have identified a critical unauthenticated Remote Code Execution (RCE) vulnerability in BMC Remedy Mid Tier (CVE-2019-12740).

 

Mid Tier versions 9.1, 18.05, 18.08, and 19.02, service packs, and patches, are all affected by this vulnerability.

 

Perform the following steps to resolve this issue:

  1. Ensure that the base version of Mid Tier is as follows:
    • For Mid Tier version 9.1—Base version must be Patch 1 for 9.1 Service Pack 3 (9.1.03.001) or Patch 2 for 9.1 Service Pack 4 (9.1.04.002)
    • For Mid Tier version 18.05—Base version must be 18.05 or Service Pack 5 for version 18.05 (18.05.005)
    • For Mid Tier version 18.08—Base version must be Service Pack 1 for version 18.08 (18.08.01)
    • For Mid Tier version 19.02—Base version must be 19.02
  2. Download the hot fix from ftp://ftp.bmc.com/pub/ARRecommendedFixes/Midtier.
  3. Deploy the hot fix as described in the Readme file provided with each hot fix bundle.
  4. Edit the web.xml file located in the <midTierInstallDirectory>/WEB-INF directory. For information about the steps to be followed, see the Additional Instructions section in the Readme files.

 

 

For any additional questions, please open a Support case.

 

Many thanks to both researchers for responsibly disclosing this vulnerability and cooperating with BMC for a speedy resolution.

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NOTE: This vulnerability is only applicable to AR System on Linux servers.

 

BMC Software has identified a security vulnerability (CVE-2018-19647) that could allow a remote, unauthenticated attacker to gain arbitrary code execution as the system user running the arplugin service. The exposure is limited to scenarios where an attacker is on the same network as the Remedy AR System and can bypass standard network-based defenses such as firewalls. For Remedy AR System 9.x and 18.x, all versions, service packs, and patches are affected by this vulnerability. BMC strongly recommends that customers who have installed Remedy AR System 9.x or 18.x apply this hot fix. Hot fixes for the affected versions are available at the following links:

 

 

PREREQUISITES: Customers on Remedy AR System 9.1.04 must apply patch 002 (9.1.04.002) before applying the hot fix if they have not already applied it. Customers on Remedy AR System 9.1.03 must apply patch 001 (9.1.03.001) before applying the hot fix if they have not already applied it. Customers on Remedy AR System 9.1.02 must apply patch 004 (9.1.02.004) before applying the hot fix if they have not already applied it. There are no prerequisites for installation on Remedy AR System 18.05 or 18.08.

 

Thanks to François Goichon from the Google Security Team for identification of this problem.

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