{"document":{"acknowledgments":[{"organization":"CERT@VDE","summary":"coordination","urls":["https://certvde.com"]},{"organization":"MB Connect Line GmbH","summary":"reporting","urls":["https://mbconnectline.com/"]}],"category":"csaf_security_advisory","csaf_version":"2.0","distribution":{"tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en-GB","notes":[{"category":"summary","text":"The data24 service that is bundled with every installation of myREX24 V2/myREX24.virtual has two\nserious flaws in core components. These combined can lead to a complete loss of confidentiality, integrity\nand availability.","title":"Summary"},{"category":"description","text":"CVE-2024-23943: A total loss of confidentiality and integrity, for individual devices or the whole service, is\npossible.\n\nCVE-2024-23942: An attacker in possession of the device's configuration file can impersonate the real\ndevice. This also allows to prevent the real device from connecting successful.","title":"Impact"},{"category":"description","text":"CVE-2024-23942: If the device's serial number is known to myREX24 V2/myREX24.virtual before the\ndownloadable configuration is created, that configuration will be encrypted allowing only the correct device to\ndecrypt it.","title":"Mitigation"},{"category":"description","text":"Update to latest version: 2.16.2\n\nCVE-2024-23943: This fix does not apply to REX 200/REX 250 devices with firmware 8.0.0 - 8.1.3. If you are using a device with this firmware, please update it to >= 8.2.0.","title":"Remediation"},{"category":"general","text":"Always use the latest available firmware version on all devices.","title":"General Recommendation"}],"publisher":{"category":"vendor","contact_details":"psirt@helmholz.de","name":"Helmholz GmbH & Co. KG","namespace":"https://www.helmholz.de"},"references":[{"category":"external","summary":"Helmholz GmbH & Co. KG Advisories","url":"https://www.helmholz.de/en/service-support/service/security-psirt/"},{"category":"external","summary":"CERT@VDE Security Advisories for Helmholz GmbH & Co. KG","url":"https://certvde.com/en/advisories/vendor/helmholz"},{"category":"self","summary":"VDE-2024-031: Helmholz: Vulnerabilities in myREX24 V2/myREX24.virtual - HTML","url":"https://certvde.com/en/advisories/VDE-2024-031"},{"category":"self","summary":"VDE-2024-031: Helmholz: Vulnerabilities in myREX24 V2/myREX24.virtual - CSAF","url":"https://helmholz.csaf-tp.certvde.com/.well-known/csaf/white/2025/vde-2024-031.json"}],"title":"Helmholz: Vulnerabilities in myREX24 V2/myREX24.virtual","tracking":{"aliases":["VDE-2024-031"],"current_release_date":"2025-05-14T13:00:14.000Z","generator":{"date":"2025-03-18T13:56:49.218Z","engine":{"name":"Secvisogram","version":"2.5.18"}},"id":"VDE-2024-031","initial_release_date":"2025-03-18T11:00:00.000Z","revision_history":[{"date":"2025-03-18T11:00:00.000Z","number":"1","summary":"Initial revision."},{"date":"2025-03-18T14:00:00.000Z","number":"2","summary":"Update: Changed Product name"},{"date":"2025-04-10T13:00:00.000Z","number":"3","summary":"Update: fixed CSAF-Reference URL, changed url in credits, removed whitespace after version operator"},{"date":"2025-05-14T13:00:14.000Z","number":"4","summary":"Fix: added distribution"}],"status":"final","version":"4"}},"product_tree":{"branches":[{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"myREX24 V2","product":{"name":"myREX24 V2","product_id":"CSAFPID-11001"}},{"category":"product_name","name":"myREX24.virtual","product":{"name":"myREX24.virtual","product_id":"CSAFPID-11002"}}],"category":"product_family","name":"myREX24"},{"branches":[{"category":"product_name","name":"REX 200","product":{"name":"REX 200","product_id":"CSAFPID-11003"}},{"category":"product_name","name":"REX 250","product":{"name":"REX 250","product_id":"CSAFPID-11004"}}],"category":"product_family","name":"REX"}],"category":"product_family","name":"Hardware"},{"branches":[{"category":"product_version","name":"2.16.2","product":{"name":"Firmware 2.16.2","product_id":"CSAFPID-22001"}},{"category":"product_version_range","name":"<2.16.2","product":{"name":"Firmware <2.16.2","product_id":"CSAFPID-21001"}},{"category":"product_version","name":"8.2.0","product":{"name":"Firmware 8.2.0","product_id":"CSAFPID-22003"}},{"category":"product_version_range","name":"<8.2.0","product":{"name":"Firmware <8.2.0","product_id":"CSAFPID-22004"}}],"category":"product_family","name":"Firmware"}],"category":"vendor","name":"Helmholz GmbH & Co. KG"}],"product_groups":[{"group_id":"CSAFGID-0001","product_ids":["CSAFPID-31001","CSAFPID-31002","CSAFPID-31003","CSAFPID-31004"],"summary":"Affected products."},{"group_id":"CSAFGID-0002","product_ids":["CSAFPID-32001","CSAFPID-32002","CSAFPID-32003","CSAFPID-32004"],"summary":"Fixed products."}],"relationships":[{"category":"installed_on","full_product_name":{"name":"Firmware <2.16.2 installed on myREX24 V2","product_id":"CSAFPID-31001"},"product_reference":"CSAFPID-21001","relates_to_product_reference":"CSAFPID-11001"},{"category":"installed_on","full_product_name":{"name":"Firmware <2.16.2 installed on myREX24.virtual","product_id":"CSAFPID-31002"},"product_reference":"CSAFPID-21001","relates_to_product_reference":"CSAFPID-11002"},{"category":"installed_on","full_product_name":{"name":"Firmware 2.16.2 installed on myREX24 V2","product_id":"CSAFPID-32001"},"product_reference":"CSAFPID-22001","relates_to_product_reference":"CSAFPID-11001"},{"category":"installed_on","full_product_name":{"name":"Firmware 2.16.2 installed on myREX24.virtual","product_id":"CSAFPID-32002"},"product_reference":"CSAFPID-22001","relates_to_product_reference":"CSAFPID-11002"},{"category":"installed_on","full_product_name":{"name":"Firmware 8.2.0 installed on REX 200","product_id":"CSAFPID-32003"},"product_reference":"CSAFPID-11003","relates_to_product_reference":"CSAFPID-22003"},{"category":"installed_on","full_product_name":{"name":"Firmware 8.2.0 installed on REX 250","product_id":"CSAFPID-32004"},"product_reference":"CSAFPID-11004","relates_to_product_reference":"CSAFPID-22003"},{"category":"installed_on","full_product_name":{"name":"Firmware <8.2.0 installed on REX 200","product_id":"CSAFPID-31003"},"product_reference":"CSAFPID-11003","relates_to_product_reference":"CSAFPID-22004"},{"category":"installed_on","full_product_name":{"name":"Firmware <8.2.0 installed on REX 250","product_id":"CSAFPID-31004"},"product_reference":"CSAFPID-11004","relates_to_product_reference":"CSAFPID-22004"}]},"vulnerabilities":[{"cve":"CVE-2024-23943","cwe":{"id":"CWE-306","name":"Missing Authentication for Critical Function"},"notes":[{"audience":"all","category":"description","text":"An unauthenticated remote attacker can gain access to the cloud API due to a lack of authentication for a critical function in the affected devices. A DoS is not possible.","title":"Vulnerability Description"}],"product_status":{"fixed":["CSAFPID-32001","CSAFPID-32002","CSAFPID-32003","CSAFPID-32004"],"known_affected":["CSAFPID-31001","CSAFPID-31002","CSAFPID-31003","CSAFPID-31004"]},"remediations":[{"category":"vendor_fix","details":"Update to latest version: 2.16.2\n\nCVE-2024-23943: This fix does not apply to REX 200/REX 250 devices with firmware 8.0.0 - 8.1.3. If you are using a device with this firmware, please update it to >= 8.2.0.","group_ids":["CSAFGID-0001"]}],"scores":[{"cvss_v3":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","environmentalScore":9.1,"environmentalSeverity":"CRITICAL","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","temporalScore":9.1,"temporalSeverity":"CRITICAL","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"products":["CSAFPID-31001","CSAFPID-31002","CSAFPID-31003","CSAFPID-31004"]}],"title":"CVE-2024-23943"},{"cve":"CVE-2024-23942","cwe":{"id":"CWE-311","name":"Missing Encryption of Sensitive Data"},"notes":[{"audience":"all","category":"description","text":"A local user may find a configuration file on the client workstation with unencrypted sensitive data. This allows an attacker to impersonate the device or prevent the device from accessing the cloud portal.","title":"Vulnerability Description"}],"product_status":{"fixed":["CSAFPID-32001","CSAFPID-32002"],"known_affected":["CSAFPID-31001","CSAFPID-31002"]},"remediations":[{"category":"mitigation","details":"CVE-2024-23942: If the device's serial number is known to myREX24 V2/myREX24.virtual before the\ndownloadable configuration is created, that configuration will be encrypted allowing only the correct device to\ndecrypt it.","group_ids":["CSAFGID-0001"]}],"scores":[{"cvss_v3":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","environmentalScore":5.5,"environmentalSeverity":"MEDIUM","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","temporalScore":5.5,"temporalSeverity":"MEDIUM","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"products":["CSAFPID-31001","CSAFPID-31002"]}],"title":"CVE-2024-23942"}]}