ESB-2018.3330 - [SUSE] python-cryptography: Access privileged data - Remote/unauthenticated 2018-10-30

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3330
                  Security update for python-cryptography
                              30 October 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           python-cryptography
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Access Privileged Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-10903  

Reference:         ESB-2018.3277

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2018/suse-su-20183553-1/

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   SUSE Security Update: Security update for python-cryptography
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:3553-1
Rating:             moderate
References:         #1101820
Cross-References:   CVE-2018-10903
Affected Products:
                    SUSE OpenStack Cloud Crowbar 8
                    SUSE OpenStack Cloud 8
                    HPE Helion Openstack 8
______________________________________________________________________________

   An update that fixes one vulnerability is now available.

Description:

   This update for python-cryptography fixes the following issues:

   - CVE-2018-10903: The finalize_with_tag API did not enforce a minimum tag
     length. If a user did not validate the input length prior to passing it
     to finalize_with_tag an attacker could craft an invalid payload with a
     shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance
     of passing the MAC check. GCM tag forgeries could have caused key
     leakage (bsc#1101820)


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 OpenStack Cloud Crowbar 8:

      zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-8-2018-2517=1

   - SUSE OpenStack Cloud 8:

      zypper in -t patch SUSE-OpenStack-Cloud-8-2018-2517=1

   - HPE Helion Openstack 8:

      zypper in -t patch HPE-Helion-OpenStack-8-2018-2517=1



Package List:

   - SUSE OpenStack Cloud Crowbar 8 (x86_64):

      python-cryptography-2.0.3-3.3.1
      python-cryptography-debuginfo-2.0.3-3.3.1
      python-cryptography-debugsource-2.0.3-3.3.1

   - SUSE OpenStack Cloud 8 (x86_64):

      python-cryptography-2.0.3-3.3.1
      python-cryptography-debuginfo-2.0.3-3.3.1
      python-cryptography-debugsource-2.0.3-3.3.1

   - HPE Helion Openstack 8 (x86_64):

      python-cryptography-2.0.3-3.3.1
      python-cryptography-debuginfo-2.0.3-3.3.1
      python-cryptography-debugsource-2.0.3-3.3.1


References:

   https://www.suse.com/security/cve/CVE-2018-10903.html
   https://bugzilla.suse.com/1101820

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