Ashlar-Vellum Cobalt Out-Of-Bounds Write 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 X_B or X_T files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
. Was ZDI-CAN-18637.
                
            Metrics
Affected Vendors & Products
References
        | Link | Providers | 
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-23-865/ | 
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History
                    Fri, 08 Aug 2025 15:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| CPEs | cpe:2.3:a:ashlar:cobalt:12.0.1204.49:*:*:*:*:*:*:* | 
Thu, 19 Sep 2024 20:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| First Time appeared | 
        
        Ashlar
         Ashlar cobalt  | 
|
| CPEs | cpe:2.3:a:ashlar:cobalt:*:*:*:*:*:*:*:* | |
| Vendors & Products | 
        
        Ashlar
         Ashlar cobalt  | 
|
| Metrics | 
        
        ssvc
         
  | 
Wed, 18 Sep 2024 18:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Description | Ashlar-Vellum Cobalt Out-Of-Bounds Write 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 X_B or X_T files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18637. | Ashlar-Vellum Cobalt Out-Of-Bounds Write 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 X_B or X_T files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-18637. | 
Status: PUBLISHED
Assigner: zdi
Published: 2024-05-03T01:57:27.273Z
Updated: 2024-09-18T18:28:42.099Z
Reserved: 2023-05-31T19:51:08.226Z
Link: CVE-2023-34305
Updated: 2024-08-02T16:10:06.421Z
Status : Analyzed
Published: 2024-05-03T02:15:31.720
Modified: 2025-08-08T15:02:53.690
Link: CVE-2023-34305
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