{"id":"CVE-2025-34324","state":"PUBLISHED","title":"GoSign Desktop < 2.4.1 Insecure Update Mechanism RCE","description":"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.","publishedAt":"2025-11-18T16:33:05.469Z","updatedAt":"2025-11-18T18:24:11.777Z","severity":{"score":7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Tinexta InfoCert S.p.A. 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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."}],"affected":[{"vendor":"Tinexta InfoCert S.p.A.","product":"GoSign Desktop","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"2.4.1","versionType":"semver"}]}],"references":[{"url":"https://www.ush.it/2025/11/14/multiple-vulnerabilities-gosign-desktop-remote-code-execution/","tags":["technical-description","exploit"]},{"url":"https://infocert.digital/consumer/gosign-suite/","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/gosign-desktop-insecure-update-mechanism-rce","tags":["third-party-advisory"]},{"url":"https://www.ush.it/2025/11/14/vulnerabilita-multiple-gosign-desktop-esecuzione-remota-codice-arbitrario/","tags":["technical-description","exploit"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-347","description":"CWE-347 Improper Verification of Cryptographic Signature","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2025-11-18T16:33:05.469Z"},"credits":[{"lang":"en","type":"finder","value":"Pasquale \"sid\" Fiorillo"},{"lang":"en","type":"finder","value":"Francesco \"ascii\" Ongaro"},{"lang":"en","type":"finder","value":"Marco Lunardi"}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2025-11-14T18:09:00.000Z","value":"Researcher publicly discloses vulnerability"}],"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://www.ush.it/2025/11/14/multiple-vulnerabilities-gosign-desktop-remote-code-execution/","tags":["exploit"]},{"url":"https://www.ush.it/2025/11/14/vulnerabilita-multiple-gosign-desktop-esecuzione-remota-codice-arbitrario/","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-11-18T18:24:08.434766Z","id":"CVE-2025-34324","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-11-18T18:24:11.777Z"}}]}}}