Ashlar-Vellum Cobalt out-of-bounds write

Summaryinfo

A vulnerability was found in Ashlar-Vellum Cobalt. It has been rated as critical. The affected element is an unknown function. The manipulation leads to out-of-bounds write. This vulnerability is referenced as CVE-2023-34293. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in Ashlar-Vellum Cobalt (version unknown). It has been rated as critical. This issue affects an unknown function. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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-18636.

The weakness was published 06/19/2023. It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2023-34293 since 05/31/2023. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/07/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Ashlar-Vellum

Name

• Cobalt

License

• commercial

CPE 2.3info

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CPE 2.2info

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