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[security-announce] openSUSE-SU-2019:1123-1: moderate: Security update for putty
openSUSE Security Update: Security update for putty
______________________________________________________________________________

Announcement ID: openSUSE-SU-2019:1123-1
Rating: moderate
References: #1129633
Cross-References: CVE-2019-9894 CVE-2019-9895 CVE-2019-9896
CVE-2019-9897 CVE-2019-9898
Affected Products:
openSUSE Backports SLE-15
______________________________________________________________________________

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.

This update was imported from the openSUSE:Leap:15.0: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 Backports SLE-15:

zypper in -t patch openSUSE-2019-1123=1



Package List:

- openSUSE Backports SLE-15 (aarch64 ppc64le s390x x86_64):

putty-0.71-bp150.4.3.1


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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