CVE-2025-34324

GoSign Desktop versions 2.4.0 and earlier use an unsigned update manifest for distributing application updates. The manifest contains package URLs and SHA-256 hashes but is not digitally signed, so its authenticity relies solely on the underlying TLS channel. In affected versions, TLS certificate validation can be disabled when a proxy is configured, allowing an attacker who can intercept network traffic to supply a malicious update manifest and corresponding package with a matching hash. This can cause the client to download and install a tampered update, resulting in arbitrary code execution with the privileges of the GoSign Desktop user on Windows and macOS, or with elevated privileges on some Linux deployments. A local attacker who can modify proxy settings may also abuse this behavior to escalate privileges by forcing installation of a crafted update.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

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://infocert.digital/consumer/gosign-suite/	Product
https://www.ush.it/2025/11/14/multiple-vulnerabilities-gosign-desktop-remote-code-execution/	Exploit Third Party Advisory
https://www.ush.it/2025/11/14/vulnerabilita-multiple-gosign-desktop-esecuzione-remota-codice-arbitrario/	Exploit Third Party Advisory
https://www.vulncheck.com/advisories/gosign-desktop-insecure-update-mechanism-rce	Third Party Advisory
https://www.ush.it/2025/11/14/multiple-vulnerabilities-gosign-desktop-remote-code-execution/	Exploit Third Party Advisory
https://www.ush.it/2025/11/14/vulnerabilita-multiple-gosign-desktop-esecuzione-remota-codice-arbitrario/	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:infocert:gosign:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-11-18 17:16

Updated : 2025-12-31 02:19

NVD link : CVE-2025-34324

Mitre link : CVE-2025-34324

CVE.ORG link : CVE-2025-34324

JSON object : View

Products Affected

infocert

gosign

CWE

CWE-347

Improper Verification of Cryptographic Signature

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