CVE-2023-39943

Ashlar-Vellum Cobalt, Xenon, Argon, Lithium Out-of-bounds Write

Published Feb 4, 2025 CVSS 4.0 · 8.4 High EPSS < 1% KEV · Not listed
Description
In Ashlar-Vellum Cobalt versions prior to v12 SP2 Build (1204.200), the affected application lacks proper validation of user-supplied data when parsing XE files. This could lead to an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.

Analysis

No analysis available yet

Remediation

Vendor Solution

Ashlar-Vellum recommends users apply the following mitigations to help reduce risk: * Install the latest version of Graphite https://download.ashlar.com/v13/gr.html . * Update to the latest version for Cobalt, Xenon, Lithium, and Argon by installing v12 SP12 Alpha https://download.ashlar.com/v12/mod-history.html  Build (1204.200) (Jan 22, 2025). * Only open files from trusted sources.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-43641 In Ashlar-Vellum Cobalt versions prior to v12 SP2 Build (1204.200), the affected application lacks proper validation of user-supplied data when parsing XE files. This could lead to an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.
History
Type Values Removed Values Added
First Time appeared Ashlar
Ashlar cobalt
CPEs cpe:2.3:a:ashlar:cobalt:*:*:*:*:*:*:*:*
Vendors & Products Ashlar
Ashlar cobalt
Type Values Removed Values Added
Metrics epss

{'score': 0.00018}

epss

{'score': 0.00022}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description In Ashlar-Vellum Cobalt versions prior to v12 SP2 Build (1204.200), the affected application lacks proper validation of user-supplied data when parsing XE files. This could lead to an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.
Title Ashlar-Vellum Cobalt, Xenon, Argon, Lithium Out-of-bounds Write
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Feb 5, 2025, 7:40 PM
Reserved
Aug 10, 2023, 7:30 PM
Status
Analyzed
Published
Feb 4, 2025, 11:15 PM
Modified
Jun 17, 2026, 6:12 AM