JLSEC-2025-212
- Source
- https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2025/JLSEC-2025-212.md
- Import Source
- https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-212.json
- JSON Data
- https://api.osv.dev/v1/vulns/JLSEC-2025-212
- Upstream
- Published
- 2025-11-21T15:59:04.054Z
- Modified
- 2026-07-23T22:30:19.640828485Z
- Severity
-
- 4.3 (Medium) CVSS_V2 - AV:N/AC:M/Au:N/C:N/I:P/A:N CVSS Calculator
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- An issue was discovered in Mbed TLS before 2.24.0
- Details
-
An issue was discovered in Mbed TLS before 2.24.0. The verification of X.509 certificates when matching the expected common name (the cn argument of
mbedtls_x509_crt_verify) with the actual certificate name is mishandled: when the subjecAltName extension is present, the expected name is compared to any name in that extension regardless of its type. This means that an attacker could impersonate a 4-byte or 16-byte domain by getting a certificate for the corresponding IPv4 or IPv6 address (this would require the attacker to control that IP address, though). - Database specific
{ "license": "CC-BY-4.0", "sources": [ { "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-36477", "database_specific": { "status": "Modified" }, "id": "CVE-2020-36477", "imported": "2026-07-17T20:45:36.836Z", "published": "2021-08-23T02:15:07.043Z", "modified": "2026-06-17T03:15:34.560Z", "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36477" } ] }- References