In four instances DMARS (All versions prior to v2.1.10.24) does not properly restrict references of XML external entities while processing specific project files, which may allow unauthorized information disclosure.
{"id": "CVE-2022-1331", "vendorId": null, "type": "cve", "bulletinFamily": "NVD", "title": "CVE-2022-1331", "description": "In four instances DMARS (All versions prior to v2.1.10.24) does not properly restrict references of XML external entities while processing specific project files, which may allow unauthorized information disclosure.", "published": "2022-05-03T19:15:00", "modified": "2022-05-10T14:25:00", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "accessVector": "NETWORK", "accessComplexity": "MEDIUM", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3}, "severity": "MEDIUM", "exploitabilityScore": 8.6, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}, "cvss3": {"cvssV3": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM"}, "exploitabilityScore": 1.8, "impactScore": 3.6}, "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-1331", "reporter": "ics-cert@hq.dhs.gov", "references": ["https://www.cisa.gov/uscert/ics/advisories/icsa-22-104-01"], "cvelist": ["CVE-2022-1331"], "immutableFields": [], "lastseen": "2022-05-10T17:18:38", "viewCount": 28, "enchantments": {"twitter": {"counter": 4, "tweets": [{"link": "https://twitter.com/www_sesin_at/status/1524231806656172032", "text": "New post from https://t.co/9KYxtdZjkl (CVE-2022-1331 (dmars)) has been published on https://t.co/awpSrYAWQG", "author": "www_sesin_at", "author_photo": "https://pbs.twimg.com/profile_images/958100963822329858/fb_N8h5n_400x400.jpg"}, {"link": "https://twitter.com/WolfgangSesin/status/1524231805536284675", "text": "New post from https://t.co/uXvPWJy6tj (CVE-2022-1331 (dmars)) has been published on https://t.co/Ni4MA2mBcH", "author": "WolfgangSesin", "author_photo": "https://pbs.twimg.com/profile_images/957011635369054208/Om3jbj7z_400x400.jpg"}]}, "score": {"value": 3.1, "vector": "NONE"}, "dependencies": {"references": [{"type": "ics", "idList": ["ICSA-22-104-01"]}, {"type": "zdi", "idList": ["ZDI-22-696", "ZDI-22-697", "ZDI-22-698", "ZDI-22-699"]}]}, "vulnersScore": 3.1}, "_state": {"twitter": 1652244378, "score": 1660016489, "dependencies": 1660016219}, "_internal": {"score_hash": "60d48f35c1c8c1ce71a70e797ca6b649"}, "cna_cvss": {"cna": "ICS-CERT", "cvss": {"3": {"vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "score": 5.5}}}, "cpe": [], "cpe23": [], "cwe": ["CWE-611"], "affectedSoftware": [{"cpeName": "deltaww:dmars", "version": "2.1.10.24", "operator": "lt", "name": "deltaww dmars"}], "affectedConfiguration": [], "cpeConfiguration": {"CVE_data_version": "4.0", "nodes": [{"operator": "OR", "children": [], "cpe_match": [{"vulnerable": true, "cpe23Uri": "cpe:2.3:a:deltaww:dmars:2.1.10.24:*:*:*:*:*:*:*", "versionEndExcluding": "2.1.10.24", "cpe_name": []}]}]}, "extraReferences": [{"url": "https://www.cisa.gov/uscert/ics/advisories/icsa-22-104-01", "name": "https://www.cisa.gov/uscert/ics/advisories/icsa-22-104-01", "refsource": "MISC", "tags": ["Third Party Advisory", "US Government Resource"]}]}
{"zdi": [{"lastseen": "2022-05-10T18:15:41", "description": "This vulnerability allows remote attackers to disclose sensitive information on affected installations of Delta Industrial Automation DMARS. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of XML files. Due to the improper restriction of XML External Entity (XXE) references, a crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose files in the context of the current process.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2022-04-28T00:00:00", "type": "zdi", "title": "Delta Industrial Automation DMARS Scope File Parsing XML External Entity Processing Information Disclosure Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2022-1331"], "modified": "2022-04-28T00:00:00", "id": "ZDI-22-698", "href": "https://www.zerodayinitiative.com/advisories/ZDI-22-698/", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-05-10T18:15:40", "description": "This vulnerability allows remote attackers to disclose sensitive information on affected installations of Delta Industrial Automation DMARS. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of DMARS files. Due to the improper restriction of XML External Entity (XXE) references, a crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose files in the context of the current process.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2022-04-28T00:00:00", "type": "zdi", "title": "Delta Industrial Automation DMARS Project File Parsing XML External Entity Processing Information Disclosure Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2022-1331"], "modified": "2022-04-28T00:00:00", "id": "ZDI-22-699", "href": "https://www.zerodayinitiative.com/advisories/ZDI-22-699/", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-05-10T18:15:41", "description": "This vulnerability allows remote attackers to disclose sensitive information on affected installations of Delta Industrial Automation DMARS. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of XML files within Scope Configuration processing. Due to the improper restriction of XML External Entity (XXE) references, a crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose files in the context of the current process.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2022-04-28T00:00:00", "type": "zdi", "title": "Delta Industrial Automation DMARS ScopeConfig File Parsing XML External Entity Processing Information Disclosure Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2022-1331"], "modified": "2022-04-28T00:00:00", "id": "ZDI-22-697", "href": "https://www.zerodayinitiative.com/advisories/ZDI-22-697/", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-05-10T18:15:41", "description": "This vulnerability allows remote attackers to disclose sensitive information on affected installations of Delta Industrial Automation DMARS. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of DSCP files. Due to the improper restriction of XML External Entity (XXE) references, a crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose files in the context of the current process.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2022-04-28T00:00:00", "type": "zdi", "title": "Delta Industrial Automation DMARS DSCP Scope File Parsing XML External Entity Processing Information Disclosure Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2022-1331"], "modified": "2022-04-28T00:00:00", "id": "ZDI-22-696", "href": "https://www.zerodayinitiative.com/advisories/ZDI-22-696/", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}], "ics": [{"lastseen": "2022-05-10T17:40:01", "description": "## 1\\. EXECUTIVE SUMMARY\n\n * **CVSS v3 5.5**\n * **ATTENTION:** Low attack complexity\n * **Vendor: **Delta Electronics\n * **Equipment:** DMARS\n * **Vulnerability:** Improper Restriction of XML External Entity Reference\n\n## 2\\. RISK EVALUATION\n\nSuccessful exploitation of this vulnerability could allow an attacker to gain sensitive information.\n\n## 3\\. TECHNICAL DETAILS\n\n### 3.1 AFFECTED PRODUCTS\n\nThe following versions of DMARS, a Motion Controller program development tool, are affected:\n\n * DMARS: All versions prior to v2.1.10.24\n\n### 3.2 VULNERABILITY OVERVIEW\n\n#### 3.2.1 [IMPROPER RESTRICTION OF XML EXTERNAL ENTITY REFERENCE CWE-611](<https://cwe.mitre.org/data/definitions/611.html>)\n\nIn four instances the affected product does not properly restrict references of XML external entities while processing specific project files, which may allow unauthorized information disclosure. \n\n[CVE-2022-1331](<http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-1331>) has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been calculated; the CVSS vector string is ([AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N](<https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N>)).\n\n### 3.3 BACKGROUND\n\n * **CRITICAL INFRASTRUCTURE SECTORS:** Critical Manufacturing\n * **COUNTRIES/AREAS DEPLOYED: **Worldwide\n * **COMPANY HEADQUARTERS LOCATION: **Taiwan\n\n### 3.4 RESEARCHER\n\nKimiya, working with Trend Micro\u2019s Zero Day Initiative, reported this vulnerability to CISA.\n\n## 4\\. MITIGATIONS\n\nDelta Electronics recommends users update to the latest version. Users can obtain the update by contacting Delta Electronics\u2019 corresponding FAE (Field Application Engineer) or solution center. \nDelta Electronics also recommends the following:\n\n * Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.\n * Locate control system networks and remote devices behind firewalls and isolate them from the business network.\n * Never connect programming software to any network other than the network intended for that device.\n * When remote access is required, use secure methods, such as virtual private networks (VPNs), recognizing a VPN is only as secure as its connected devices.\n\nCISA recommends users take the following measures to protect themselves from social engineering attacks:\n\n * Only use project files from trusted sources.\n * Do not click web links or open unsolicited attachments in email messages.\n * Refer to [Recognizing and Avoiding Email Scams](<https://www.cisa.gov/uscert/sites/default/files/publications/emailscams_0905.pdf>) for more information on avoiding email scams.\n * Refer to [Avoiding Social Engineering and Phishing Attacks](<https://www.cisa.gov/uscert/ncas/tips/ST04-014>) for more information on social engineering attacks.\n\nCISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. \n \nCISA also provides a section for [control systems security recommended practices](<https://www.cisa.gov/uscert/ics/recommended-practices>) on the ICS webpage on [cisa.gov](<https://www.cisa.gov/uscert/ics>). Several recommended practices are available for reading and download, including [Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies](<https://www.cisa.gov/uscert/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf>).\n\nAdditional mitigation guidance and recommended practices are publicly available on the [ICS webpage on cisa.gov](<https://www.cisa.gov/uscert/ics>) in the Technical Information Paper, [ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies](<https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B>). \n \nOrganizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.\n\nNo known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely.\n\n## \nContact Information\n\nFor any questions related to this report, please contact the CISA at: \n \nEmail: [CISAservicedesk@cisa.dhs.gov](<mailto:cisaservicedesk@cisa.dhs.gov>) \nToll Free: 1-888-282-0870\n\nFor industrial control systems cybersecurity information: https://us-cert.cisa.gov/ics \nor incident reporting: https://us-cert.cisa.gov/report\n\nCISA continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product.\n\nThis product is provided subject to this Notification and this [Privacy & Use](<https://www.dhs.gov/privacy-policy>) policy.\n\n**Please share your thoughts.**\n\nWe recently updated our anonymous [product survey](<https://www.surveymonkey.com/r/CISA-cyber-survey?product=https://us-cert.cisa.gov/ics/advisories/icsa-22-104-01>); we'd welcome your feedback.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2022-04-14T00:00:00", "type": "ics", "title": "Delta Electronics DMARS", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2022-1331"], "modified": "2022-04-14T00:00:00", "id": "ICSA-22-104-01", "href": "https://www.us-cert.gov/ics/advisories/icsa-22-104-01", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}]}
CVE-2022-1331
