Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
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
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

TypeDescriptionCount
Application 1

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/108466
MISC https://www.telekom.com/en/corporate-responsibility/data-protection-data-secu...
https://www.telekom.com/resource/blob/572524/1c89c1cbaccdf792153063b3a10af10e...

Alert History

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Date Informations
2022-04-23 00:23:41
  • Multiple Updates
2021-08-05 01:31:46
  • Multiple Updates
2021-07-21 17:25:04
  • Multiple Updates
2021-05-04 13:21:31
  • Multiple Updates
2021-04-22 02:36:44
  • Multiple Updates
2020-05-23 02:21:53
  • Multiple Updates
2019-05-27 17:19:22
  • Multiple Updates
2019-05-25 00:19:06
  • Multiple Updates
2019-05-23 17:19:18
  • First insertion