Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title GnuTLS: DTLS protocol regression
Informations
Name GLSA-202004-06 First vendor Publication 2020-04-02
Vendor Gentoo Last vendor Modification 2020-04-02
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Overall CVSS Score 7.4
Base Score 7.4 Environmental Score 7.4
impact SubScore 5.2 Temporal Score 7.4
Exploitabality Sub Score 2.2
 
Attack Vector Network Attack Complexity High
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
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:P/I:P/A:N)
Cvss Base Score 5.8 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A regression in GnuTLS breaks the security guarantees of the DTLS protocol.

Background

GnuTLS is an Open Source implementation of the TLS and SSL protocols.

Description

It was discovered that DTLS client did not contribute any randomness to the DTLS negotiation.

Impact

Please review the referenced advisory for details.

Workaround

There is no known workaround at this time.

Resolution

All GnuTLS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/gnutls-3.6.13"

References

[ 1 ] GNUTLS-SA-2020-03-31
https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/202004-06

Original Source

Url : http://security.gentoo.org/glsa/glsa-202004-06.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-327 Use of a Broken or Risky Cryptographic Algorithm (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 278
Os 1
Os 1
Os 2
Os 1

Alert History

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0
1
Date Informations
2020-06-13 05:28:10
  • Multiple Updates
2020-04-03 05:18:28
  • First insertion