Alerts This Week
Warning Icon 1 727
Alerts This Week
Warning Icon 1 727

SUSE: 2020:1584-1 Important: GnuTLS Authentication Bypass Threat

suse
Calendar Grey June 9, 2020
Dist Suse Esm H88
SUSE Security Patch resolves gnutls vulnerabilities, corrects authentication loophole and mitigates TLS 1.2 threats. Ensure your security!
An update that solves one vulnerability and has one errata is now available

Summary

This update for gnutls fixes the following issues: - CVE-2020-13777: Fixed an insecure session ticket key construction which could have made the TLS server to not bind the session ticket encryption key with a value supplied by the application until the initial key rotation, allowing an attacker to bypass authentication in TLS 1.3 and recover previous conversations in TLS 1.2 (bsc#1172506). - Fixed an improper handling of certificate chain with cross-signed intermediate CA certificates (bsc#1172461). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Server for SAP 15: zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2020-1584=1

Topics%20covered

Topics Covered

security advisory authentication gnutls TLS issue SUSE Linux Enterprise session ticket

References

#1172461 #1172506

Cross- CVE-2020-13777

Affected Products:

SUSE Linux Enterprise Server for SAP 15

SUSE Linux Enterprise Server 15-LTSS

SUSE Linux Enterprise Module for Basesystem 15-SP2

SUSE Linux Enterprise Module for Basesystem 15-SP1

SUSE Linux Enterprise High Performance Computing 15-LTSS

SUSE Linux Enterprise High Performance Computing 15-ESPOS

https://www.suse.com/security/cve/CVE-2020-13777.html

https://bugzilla.suse.com/1172461

https://bugzilla.suse.com/1172506

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2020:1584-1
Rating: important

Topics%20covered

Topics Covered

security advisory authentication gnutls TLS issue SUSE Linux Enterprise session ticket

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here