CVE-2021-31439

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html", "name": "[debian-lts-announce] 20230516 [SECURITY] [DLA 3426-1] netatalk security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": ""}, {"url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html", "name": "[debian-lts-announce] 20230516 [SECURITY] [DLA 3426-1] netatalk security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": ""}, {"url": "https://security.gentoo.org/glsa/202311-02", "name": "GLSA-202311-02", "tags": ["Issue Tracking", "Third Party Advisory"], "refsource": ""}, {"url": "https://security.gentoo.org/glsa/202311-02", "name": "GLSA-202311-02", "tags": ["Issue Tracking", "Third Party Advisory"], "refsource": ""}, {"url": "https://www.debian.org/security/2023/dsa-5503", "name": "DSA-5503", "tags": ["Third Party Advisory"], "refsource": ""}, {"url": "https://www.debian.org/security/2023/dsa-5503", "name": "DSA-5503", "tags": ["Third Party Advisory"], "refsource": ""}, {"url": "https://www.synology.com/zh-hk/security/advisory/Synology_SA_20_26", "name": "https://www.synology.com/zh-hk/security/advisory/Synology_SA_20_26", "tags": ["Vendor Advisory"], "refsource": ""}, {"url": "https://www.synology.com/zh-hk/security/advisory/Synology_SA_20_26", "name": "https://www.synology.com/zh-hk/security/advisory/Synology_SA_20_26", "tags": ["Vendor Advisory"], "refsource": ""}, {"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-492/", "name": "https://www.zerodayinitiative.com/advisories/ZDI-21-492/", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": ""}, {"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-492/", "name": "https://www.zerodayinitiative.com/advisories/ZDI-21-492/", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": ""}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Synology DiskStation Manager. Authentication is not required to exploit this vulnerablity. The specific flaw exists within the processing of DSI structures in Netatalk. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-12326."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-787"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-31439", "ASSIGNER": "zdi-disclosures@trendmicro.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.8, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 6.5, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}}, "publishedDate": "2021-05-21T15:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:synology:diskstation_manager:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "6.2.3-25426-3", "versionStartIncluding": "6.2"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "3.1.13"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2025-01-14T19:29Z"}