openSUSE-SU-2019:1113-1

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openSUSE-SU-2019:1113-1

Summary: Security update for putty

Details: 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.

References: https://lists.opensuse.org/archives/list/[email protected]/thread/CA2Q4AK5GQEYMMPK6PCTZM6P7CCCHSSH/#CA2Q4AK5GQEYMMPK6PCTZM6P7CCCHSSH, https://bugzilla.suse.com/1129633, https://www.suse.com/security/cve/CVE-2019-9894, https://www.suse.com/security/cve/CVE-2019-9895, https://www.suse.com/security/cve/CVE-2019-9896, https://www.suse.com/security/cve/CVE-2019-9897, https://www.suse.com/security/cve/CVE-2019-9898