cve-2025-3523
Vulnerability from cvelistv5
Published
2025-04-15 15:06
Modified
2025-04-15 17:51
Severity ?
EPSS score ?
Summary
When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from untrusted sources. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.
References
▼ | URL | Tags | |
---|---|---|---|
security@mozilla.org | https://bugzilla.mozilla.org/show_bug.cgi?id=1958385 | Permissions Required | |
security@mozilla.org | https://www.mozilla.org/security/advisories/mfsa2025-26/ | Vendor Advisory | |
security@mozilla.org | https://www.mozilla.org/security/advisories/mfsa2025-27/ | Vendor Advisory |
Impacted products
▼ | Vendor | Product |
---|---|---|
Mozilla | Thunderbird | |
Mozilla | Thunderbird |
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Although the correct link is used on click, the misleading hover text could trick users into downloading content from untrusted sources. This vulnerability affects Thunderbird \u003c 137.0.2 and Thunderbird \u003c 128.9.2." } ], "value": "When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from untrusted sources. This vulnerability affects Thunderbird \u003c 137.0.2 and Thunderbird \u003c 128.9.2." } ], "problemTypes": [ { "descriptions": [ { "description": "User Interface (UI) Misrepresentation of attachment URL", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2025-04-15T15:06:14.164Z", "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla" }, "references": [ { "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1958385" }, { "url": "https://www.mozilla.org/security/advisories/mfsa2025-26/" }, { "url": "https://www.mozilla.org/security/advisories/mfsa2025-27/" } ] } }, "cveMetadata": { "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "cveId": "CVE-2025-3523", "datePublished": "2025-04-15T15:06:14.164Z", "dateReserved": "2025-04-11T15:27:51.919Z", "dateUpdated": "2025-04-15T17:51:38.126Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2025-3523\",\"sourceIdentifier\":\"security@mozilla.org\",\"published\":\"2025-04-15T15:16:09.957\",\"lastModified\":\"2025-06-13T18:51:08.223\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from untrusted sources. This vulnerability affects Thunderbird \u003c 137.0.2 and Thunderbird \u003c 128.9.2.\"},{\"lang\":\"es\",\"value\":\"Cuando un correo electr\u00f3nico contiene varios archivos adjuntos con enlaces externos mediante el encabezado X-Mozilla-External-Attachment-URL, solo se muestra el \u00faltimo enlace al pasar el cursor sobre cualquier archivo adjunto. Aunque se usa el enlace correcto al hacer clic, el texto enga\u00f1oso al pasar el cursor podr\u00eda inducir a los usuarios a descargar contenido de fuentes no confiables. Esta vulnerabilidad afecta a Thunderbird (versi\u00f3n anterior a la 137.0.2) y Thunderbird (versi\u00f3n anterior a la 128.9.2).\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L\",\"baseScore\":6.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":1.6,\"impactScore\":4.7}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-451\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"128.9.2\",\"matchCriteriaId\":\"D11A3908-71D7-4967-8029-0D4DD57F384C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"129.0\",\"versionEndExcluding\":\"137.0.2\",\"matchCriteriaId\":\"971D9339-D135-4B63-A4DA-E333080DA5E6\"}]}]}],\"references\":[{\"url\":\"https://bugzilla.mozilla.org/show_bug.cgi?id=1958385\",\"source\":\"security@mozilla.org\",\"tags\":[\"Permissions Required\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2025-26/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2025-27/\",\"source\":\"security@mozilla.org\",\"tags\":[\"Vendor Advisory\"]}]}}" } }
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.