openSUSE Security Update: Security update for gnutls
______________________________________________________________________________

Announcement ID:    openSUSE-SU-2020:0790-1
Rating:             important
References:         #1172461 #1172506 
Cross-References:   CVE-2020-13777
Affected Products:
                    openSUSE Leap 15.1
______________________________________________________________________________

   An update that solves one vulnerability and has one errata
   is now available.

Description:

   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).

   This update was imported from the SUSE:SLE-15:Update update project.


Patch Instructions:

   To install this openSUSE 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:

   - openSUSE Leap 15.1:

      zypper in -t patch openSUSE-2020-790=1



Package List:

   - openSUSE Leap 15.1 (i586 x86_64):

      gnutls-3.6.7-lp151.2.18.1
      gnutls-debuginfo-3.6.7-lp151.2.18.1
      gnutls-debugsource-3.6.7-lp151.2.18.1
      gnutls-guile-3.6.7-lp151.2.18.1
      gnutls-guile-debuginfo-3.6.7-lp151.2.18.1
      libgnutls-dane-devel-3.6.7-lp151.2.18.1
      libgnutls-dane0-3.6.7-lp151.2.18.1
      libgnutls-dane0-debuginfo-3.6.7-lp151.2.18.1
      libgnutls-devel-3.6.7-lp151.2.18.1
      libgnutls30-3.6.7-lp151.2.18.1
      libgnutls30-debuginfo-3.6.7-lp151.2.18.1
      libgnutls30-hmac-3.6.7-lp151.2.18.1
      libgnutlsxx-devel-3.6.7-lp151.2.18.1
      libgnutlsxx28-3.6.7-lp151.2.18.1
      libgnutlsxx28-debuginfo-3.6.7-lp151.2.18.1

   - openSUSE Leap 15.1 (x86_64):

      libgnutls-devel-32bit-3.6.7-lp151.2.18.1
      libgnutls30-32bit-3.6.7-lp151.2.18.1
      libgnutls30-32bit-debuginfo-3.6.7-lp151.2.18.1
      libgnutls30-hmac-32bit-3.6.7-lp151.2.18.1


References:

   https://www.suse.com/security/cve/CVE-2020-13777.html
   https://bugzilla.suse.com/1172461
   https://bugzilla.suse.com/1172506

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