CVE-2023-34309

Ashlar-Vellum Cobalt Untrusted Pointer Dereference Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 parsing of CO files. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-19876.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector : AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-23-869/	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-869/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ashlar:cobalt:12.0.1204.57:*:*:*:*:*:*:*

History

08 Aug 2025, 15:05

Type	Values Removed	Values Added
References	~~() https://www.zerodayinitiative.com/advisories/ZDI-23-869/ -~~	() https://www.zerodayinitiative.com/advisories/ZDI-23-869/ - Third Party Advisory
CPE		cpe:2.3:a:ashlar:cobalt:12.0.1204.57:::::::*
First Time		Ashlar Ashlar cobalt

Information

Published : 2024-05-03 02:15

Updated : 2025-08-08 15:05

NVD link : CVE-2023-34309

Mitre link : CVE-2023-34309

CVE.ORG link : CVE-2023-34309

JSON object : View

Products Affected

ashlar

cobalt

CWE

CWE-822

Untrusted Pointer Dereference

{"id": "CVE-2023-34309", "cveTags": [], "metrics": {"cvssMetricV30": [{"type": "Secondary", "source": "zdi-disclosures@trendmicro.com", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-05-03T02:15:32.393", "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-869/", "tags": ["Third Party Advisory"], "source": "zdi-disclosures@trendmicro.com"}, {"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-869/", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "zdi-disclosures@trendmicro.com", "description": [{"lang": "en", "value": "CWE-822"}]}], "descriptions": [{"lang": "en", "value": "Ashlar-Vellum Cobalt Untrusted Pointer Dereference Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of CO files. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to execute code in the context of the current process.\n. Was ZDI-CAN-19876."}, {"lang": "es", "value": "Vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo de desreferencia de puntero no confiable de Ashlar-Vellum Cobalt. Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en las instalaciones afectadas de Ashlar-Vellum Cobalt. Se requiere la interacci\u00f3n del usuario para aprovechar esta vulnerabilidad, ya que el objetivo debe visitar una p\u00e1gina maliciosa o abrir un archivo malicioso. La falla espec\u00edfica existe en el an\u00e1lisis de archivos CO. El problema se debe a la falta de validaci\u00f3n adecuada de un valor proporcionado por el usuario antes de eliminar la referencia a \u00e9l como puntero. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto del proceso actual. Fue ZDI-CAN-19876."}], "lastModified": "2025-08-08T15:05:03.713", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ashlar:cobalt:12.0.1204.57:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4A06471-2F54-4CA2-80D7-D1587E8D6B2C"}], "operator": "OR"}]}], "sourceIdentifier": "zdi-disclosures@trendmicro.com"}