Executive Summary
Informations | |||
---|---|---|---|
Name | CVE-2020-36477 | First vendor Publication | 2021-08-23 |
Vendor | Cve | Last vendor Modification | 2023-01-13 |
Security-Database Scoring CVSS v3
Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N | |||
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Overall CVSS Score | 5.9 | ||
Base Score | 5.9 | Environmental Score | 5.9 |
impact SubScore | 3.6 | Temporal Score | 5.9 |
Exploitabality Sub Score | 2.2 | ||
Attack Vector | Network | Attack Complexity | High |
Privileges Required | None | User Interaction | None |
Scope | Unchanged | Confidentiality Impact | None |
Integrity Impact | High | Availability Impact | None |
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:M/Au:N/C:N/I:P/A:N) | |||
---|---|---|---|
Cvss Base Score | 4.3 | Attack Range | Network |
Cvss Impact Score | 2.9 | Attack Complexity | Medium |
Cvss Expoit Score | 8.6 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
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). |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36477 |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-295 | Certificate Issues |
CPE : Common Platform Enumeration
Sources (Detail)
Source | Url |
---|---|
GENTOO | https://security.gentoo.org/glsa/202301-08 |
MISC | https://github.com/ARMmbed/mbedtls/issues/3498 https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0 |
Alert History
Date | Informations |
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2024-02-02 02:17:01 |
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2024-02-01 12:21:14 |
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2023-09-05 13:11:25 |
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2023-09-05 01:20:50 |
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2023-09-02 13:10:12 |
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2023-09-02 01:21:07 |
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2023-08-12 13:15:03 |
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2023-08-12 01:20:24 |
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2023-08-11 13:08:00 |
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2023-08-11 01:21:02 |
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2023-08-06 13:06:13 |
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2023-08-06 01:20:13 |
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2023-08-04 13:06:33 |
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2023-08-04 01:20:31 |
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2023-07-14 13:06:35 |
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2023-07-14 01:20:21 |
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2023-03-29 02:09:07 |
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2023-03-28 12:20:34 |
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2023-01-14 00:27:41 |
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2023-01-11 12:51:59 |
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2022-10-11 12:59:23 |
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2022-10-11 01:20:07 |
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2021-08-27 05:22:50 |
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2021-08-23 17:22:49 |
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2021-08-23 09:22:49 |
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