{"document":{"acknowledgments":[{"urls":["https://kb.cert.org/vuls/id/760767#acknowledgements"]}],"category":"CERT/CC Vulnerability Note","csaf_version":"2.0","notes":[{"category":"summary","text":"### Overview\r\n\r\nMacrium Reflect contains a privilege escalation vulnerability due to the use of an `OPENSSLDIR` variable that specifies a location where an unprivileged Windows user can create files.\r\n\r\n### Description\r\n\r\n**CVE-2020-10143**\r\n\r\nMacrium Reflect includes an OpenSSL component that specifies an `OPENSSLDIR` variable as  `C:\\openssl\\`. Macrium Reflect contains a privileged service that uses this OpenSSL component. Because unprivileged Windows users can create subdirectories off of the system root, a user can create the appropriate path to a specially-crafted `openssl.cnf` file to achieve arbitrary code execution with SYSTEM privileges.\r\n\r\n### Impact\r\nBy placing a specially-crafted `openssl.cnf` in the `C:\\openssl\\` directory, an unprivileged user may be able to execute arbitrary code with SYSTEM privileges on a Windows system with the vulnerable Macrium software installed.\r\n\r\n### Solution\r\n#### Apply an update\r\nThis vulnerability is addressed in [Macrium Reflect v7.3.5281](https://updates.macrium.com/reflect/v7/v7.3.5281/details7.3.5281.htm).\r\n\r\n### Acknowledgements\r\nThis vulnerability was reported by Will Dormann of the CERT/CC.\r\n\r\n This document was written by Will Dormann.","title":"Summary"},{"category":"legal_disclaimer","text":"THIS DOCUMENT IS PROVIDED ON AN 'AS IS' BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. ","title":"Legal Disclaimer"},{"category":"other","text":"CERT/CC Vulnerability Note is a limited advisory. It primarily identifies vendors impacted by the advisory and not specific products. We only support \"known_affected\" and \"known_not_affected\" status. Please consult the vendor's statements and advisory URL if provided by the vendor for more details ","title":"Limitations of Advisory"},{"category":"other","text":"This vulnerability was introduced in the Macrium Reflect 7.2 series of releases, Reflect 6, 7.0 and 7.1 are not affected. All users of affected releases are entitled to a free upgrade to 7.3.5281 or later. We would like to thank to Will Dormann (@wdormann) for his diligence in reporting this to us.","title":"Vendor statment from Macrium"}],"publisher":{"category":"coordinator","contact_details":"Email: cert@cert.org, Phone: +1412 268 5800","issuing_authority":"CERT/CC under DHS/CISA https://www.cisa.gov/cybersecurity also see https://kb.cert.org/ ","name":"CERT/CC","namespace":"https://kb.cert.org/"},"references":[{"url":"https://certcc.github.io/certcc_disclosure_policy","summary":"CERT/CC vulnerability disclosure policy"},{"summary":"CERT/CC document released","category":"self","url":"https://kb.cert.org/vuls/id/760767"},{"url":"https://updates.macrium.com/reflect/v7/v7.3.5281/details7.3.5281.htm","summary":"https://updates.macrium.com/reflect/v7/v7.3.5281/details7.3.5281.htm"},{"url":"https://updates.macrium.com/reflect/v7/v7.3.5281/details7.3.5281.htm","summary":"Reference(s) from vendor \"Macrium\""}],"title":"Macrium Reflect is vulnerable to privilege escalation due to OPENSSLDIR location","tracking":{"current_release_date":"2020-11-11T13:44:14+00:00","generator":{"engine":{"name":"VINCE","version":"3.0.35"}},"id":"VU#760767","initial_release_date":"2020-10-26 16:59:04.993541+00:00","revision_history":[{"date":"2020-11-11T13:44:14+00:00","number":"1.20201111134414.4","summary":"Released on 2020-11-11T13:44:14+00:00"}],"status":"final","version":"1.20201111134414.4"}},"vulnerabilities":[{"title":"Macrium Reflect is vulnerable to privilege escalation via openssl.","notes":[{"category":"summary","text":"Macrium Reflect is vulnerable to privilege escalation via openssl.cnf"}],"cve":"CVE-2020-10143","ids":[{"system_name":"CERT/CC V Identifier ","text":"VU#760767"}],"product_status":{"known_affected":["CSAFPID-1ac89e1c-39ef-11f1-8422-122e2785dc9f"]}}],"product_tree":{"branches":[{"category":"vendor","name":"Macrium","product":{"name":"Macrium Products","product_id":"CSAFPID-1ac89e1c-39ef-11f1-8422-122e2785dc9f"}}]}}