Executive Summary

Informations
Name CVE-2021-22890 First vendor Publication 2021-04-01
Vendor Cve Last vendor Modification 2022-04-06

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Overall CVSS Score 3.7
Base Score 3.7 Environmental Score 3.7
impact SubScore 1.4 Temporal Score 3.7
Exploitabality Sub Score 2.2
 
Attack Vector Network Attack Complexity High
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact Low 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

curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly "short-cut" the host handshake. When confusing the tickets, a HTTPS proxy can trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to work - unless curl has been told to ignore the server certificate check.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22890

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-290 Authentication Bypass by Spoofing

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 143
Application 1
Application 1
Application 1
Application 1
Application 1
Hardware 1
Os 1
Os 1
Os 3

Sources (Detail)

Source Url
CONFIRM https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
https://security.netapp.com/advisory/ntap-20210521-0007/
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
GENTOO https://security.gentoo.org/glsa/202105-36
MISC https://curl.se/docs/CVE-2021-22890.html
https://hackerone.com/reports/1129529
N/A https://www.oracle.com//security-alerts/cpujul2021.html

Alert History

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Date Informations
2022-04-06 21:23:13
  • Multiple Updates
2022-03-10 21:23:24
  • Multiple Updates
2021-08-05 01:42:11
  • Multiple Updates
2021-07-21 05:23:00
  • Multiple Updates
2021-05-27 21:23:18
  • Multiple Updates
2021-05-26 21:23:19
  • Multiple Updates
2021-05-21 13:23:01
  • Multiple Updates
2021-05-04 14:08:46
  • Multiple Updates
2021-04-22 09:22:48
  • Multiple Updates
2021-04-22 03:13:49
  • Multiple Updates
2021-04-07 01:36:52
  • Multiple Updates
2021-04-07 01:36:26
  • Multiple Updates
2021-04-07 00:22:57
  • Multiple Updates
2021-04-06 09:22:56
  • Multiple Updates
2021-04-04 09:22:54
  • Multiple Updates
2021-04-02 00:22:58
  • First insertion