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openSUSE Update 2019:1123-1 for Putty Requires Attention for Security

opensuse
Calendar Grey April 2, 2019
Dist Opensuse Esm H88
openSUSE has released a key security update for the SSH client PuTTY, fixing five vulnerabilities, including critical buffer overflow issues to improve system security and user experience
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

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

--

Announcement ID: openSUSE-SU-2019:1123-1
Rating: moderate
Affected Products: openSUSE Backports SLE-15

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