openSUSE Security Update: Security update for putty
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Announcement ID:    openSUSE-SU-2019:1113-1
Rating:             moderate
References:         #1129633 
Cross-References:   CVE-2019-9894 CVE-2019-9895 CVE-2019-9896
                    CVE-2019-9897 CVE-2019-9898
Affected Products:
                    openSUSE Leap 15.0
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   An update that fixes 5 vulnerabilities is now available.

Description:

   This update for putty fixes the following issues:

   Update to new upstream release 0.71 [boo#1129633]

   * CVE-2019-9894: Fixed a remotely triggerable memory overwrite in RSA key
     exchange, which can occur before host key verification potential
     recycling of random numbers used in cryptography.
   * CVE-2019-9895: Fixed a remotely triggerable buffer overflow in any kind
     of server-to-client forwarding.
   * CVE-2019-9897: Fixed multiple denial-of-service attacks that can be
     triggered by writing to the terminal.
   * CVE-2019-9898: Fixed potential recycling of random numbers used in
     cryptography
   * CVE-2019-9896 (Windows only): Fixed hijacking by a malicious help file
     in the same directory as the executable
   * Major rewrite of the crypto code to remove cache and timing side
     channels.


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 15.0:

      zypper in -t patch openSUSE-2019-1113=1



Package List:

   - openSUSE Leap 15.0 (x86_64):

      putty-0.71-lp150.9.1
      putty-debuginfo-0.71-lp150.9.1
      putty-debugsource-0.71-lp150.9.1


References:

   https://www.suse.com/security/cve/CVE-2019-9894.html
   https://www.suse.com/security/cve/CVE-2019-9895.html
   https://www.suse.com/security/cve/CVE-2019-9896.html
   https://www.suse.com/security/cve/CVE-2019-9897.html
   https://www.suse.com/security/cve/CVE-2019-9898.html
   https://bugzilla.suse.com/1129633

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