Executive Summary
Informations | |||
---|---|---|---|
Name | CVE-2019-11873 | First vendor Publication | 2019-05-23 |
Vendor | Cve | Last vendor Modification | 2022-04-22 |
Security-Database Scoring CVSS v3
Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | |||
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Overall CVSS Score | 9.8 | ||
Base Score | 9.8 | Environmental Score | 9.8 |
impact SubScore | 5.9 | Temporal Score | 9.8 |
Exploitabality Sub Score | 3.9 | ||
Attack Vector | Network | Attack Complexity | Low |
Privileges Required | None | User Interaction | None |
Scope | Unchanged | Confidentiality Impact | High |
Integrity Impact | High | Availability Impact | High |
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P) | |||
---|---|---|---|
Cvss Base Score | 7.5 | Attack Range | Network |
Cvss Impact Score | 6.4 | Attack Complexity | Low |
Cvss Expoit Score | 10 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity size is greater than a client identity size. An attacker sends a crafted hello client packet over the network to a TLSv1.3 wolfSSL server. The length fields of the packet: record length, client hello length, total extensions length, PSK extension length, total identity length, and identity length contain their maximum value which is 2^16. The identity data field of the PSK extension of the packet contains the attack data, to be stored in the undefined memory (RAM) of the server. The size of the data is about 65 kB. Possibly the attacker can perform a remote code execution attack. |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11873 |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-787 | Out-of-bounds Write (CWE/SANS Top 25) |
CPE : Common Platform Enumeration
Type | Description | Count |
---|---|---|
Application | 1 |
Sources (Detail)
Alert History
Date | Informations |
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2022-04-23 00:23:41 |
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2021-08-05 01:31:46 |
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2021-07-21 17:25:04 |
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2021-05-04 13:21:31 |
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2021-04-22 02:36:44 |
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2020-05-23 02:21:53 |
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2019-05-27 17:19:22 |
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2019-05-25 00:19:06 |
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2019-05-23 17:19:18 |
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