CVE-2025-67873

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-67873", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-12-12T18:53:03.237Z", "datePublished": "2025-12-17T21:12:13.739Z", "dateUpdated": "2025-12-18T15:09:19.484Z"}, "containers": {"cna": {"title": "Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow", "problemTypes": [{"descriptions": [{"cweId": "CWE-122", "lang": "en", "description": "CWE-122: Heap-based Buffer Overflow", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg"}, {"name": "https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3", "tags": ["x_refsource_MISC"], "url": "https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3"}], "affected": [{"vendor": "capstone-engine", "product": "capstone", "versions": [{"version": "<= 6.0.0-Alpha5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-17T21:12:13.739Z"}, "descriptions": [{"lang": "en", "value": "Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue."}], "source": {"advisory": "GHSA-hj6g-v545-v7jg", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-12-18T14:55:59.806611Z", "id": "CVE-2025-67873", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-12-18T15:09:19.484Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"cna": {"title": "Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow", "source": {"advisory": "GHSA-hj6g-v545-v7jg", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.8, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "capstone-engine", "product": "capstone", "versions": [{"status": "affected", "version": "<= 6.0.0-Alpha5"}]}], "references": [{"url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg", "name": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3", "name": "https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-122", "description": "CWE-122: Heap-based Buffer Overflow"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-17T21:12:13.739Z"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-67873", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-12-18T14:55:59.806611Z"}}}], "references": [{"url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg", "tags": ["exploit"]}], "providerMetadata": {"shortName": "CISA-ADP", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "dateUpdated": "2025-12-18T14:56:03.352Z"}}]}, "cveMetadata": {"cveId": "CVE-2025-67873", "state": "PUBLISHED", "dateUpdated": "2025-12-17T21:12:13.739Z", "dateReserved": "2025-12-12T18:53:03.237Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2025-12-17T21:12:13.739Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "capstone", "vendor": "capstone-engine", "versions": [{"status": "affected", "version": "<= 6.0.0-Alpha5"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:capstone-engine:capstone:*:*:*:*:*:*:*:*", "matchCriteriaId": "DD22C7C2-F647-4AB5-BEB4-C70F722C0419", "versionEndExcluding": "6.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha1:*:*:*:*:*:*", "matchCriteriaId": "99F76525-F73B-4F66-AE46-A1ECAF0C7A0C", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha2:*:*:*:*:*:*", "matchCriteriaId": "442C7F48-5BEE-4702-AC0F-DE5C70FAA93F", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha3:*:*:*:*:*:*", "matchCriteriaId": "3C88415A-376C-4F7F-9D7D-3CB5C8FB9346", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha4:*:*:*:*:*:*", "matchCriteriaId": "67358CE5-F734-4E55-B021-D3AC5D937DD4", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha5:*:*:*:*:*:*", "matchCriteriaId": "9DED59B8-DC00-4323-89FA-044F7666AF5D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue."}, {"lang": "es", "value": "Capstone es un framework de desensamblado. En las versiones 6.0.0-Alpha5 y anteriores, la longitud de Skipdata no se verifica en los l\u00edmites, por lo que una devoluci\u00f3n de llamada de skipdata proporcionada por el usuario puede hacer que cs_disasm/cs_disasm_iter copie en memoria m\u00e1s de 24 bytes en cs_insn.bytes, causando un desbordamiento de b\u00fafer de mont\u00f3n en la ruta de desensamblado. El commit cbef767ab33b82166d263895f24084b75b316df3 corrige el problema."}], "id": "CVE-2025-67873", "lastModified": "2026-10-13T11:10:00.203", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 3.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-67873", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-12-18T14:55:59.806611Z", "version": "2.0.3"}}]}, "published": "2025-12-17T22:16:00.147", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "capstone: Capstone: Heap buffer overflow via skipdata callback allows denial of service or arbitrary code execution.", "id": "2423419", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2423419"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H", "status": "draft"}, "cwe": "CWE-122", "details": ["Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue."], "name": "CVE-2025-67873", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "capstone", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "rust", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "ruby:3.3/ruby", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "capstone", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "ruby:3.3/ruby", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "rust", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2025-12-17T21:12:13Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-67873\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-67873\nhttps://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3\nhttps://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg"], "statement": "This vulnerability is rated Moderate because a heap buffer overflow in the Capstone disassembly framework can be exploited by a local attacker providing a specially crafted skipdata callback, potentially leading to denial of service or arbitrary code execution. Exploitation requires local access and user interaction.", "threat_severity": "Moderate"}

{"created": "2025-12-18T09:56:08.351514+00:00", "updated": "2025-12-18T09:56:08.351542+00:00", "vendors": ["capstone-engine", "capstone-engine$PRODUCT$capstone"]}