Signed-off-by: Mike Gilbert <flop...@gentoo.org> --- .../2021-10-08-openssh-rsa-sha1.en.txt | 26 +++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 2021-10-08-openssh-rsa-sha1/2021-10-08-openssh-rsa-sha1.en.txt
diff --git a/2021-10-08-openssh-rsa-sha1/2021-10-08-openssh-rsa-sha1.en.txt b/2021-10-08-openssh-rsa-sha1/2021-10-08-openssh-rsa-sha1.en.txt new file mode 100644 index 0000000..cfdcc4a --- /dev/null +++ b/2021-10-08-openssh-rsa-sha1/2021-10-08-openssh-rsa-sha1.en.txt @@ -0,0 +1,26 @@ +Title: OpenSSH RSA SHA-1 signatures +Author: Mike Gilbert <flop...@gentoo.org> +Posted: 2021-10-08 +Revision: 1 +News-Item-Format: 2.0 +Display-If-Installed: net-misc/openssh + +As of version 8.8, OpenSSH disables RSA signatures using the SHA-1 +hash algorithm by default. This change affects both the client and +server components. + +After upgrading to this version, you may have trouble connecting to +older SSH servers that do not support the newer RSA/SHA-256/SHA-512 +signatures. Support for these signatures was added in OpenSSH 7.2. + +As well, you may have trouble using older SSH clients to connect to a +server running OpenSSH 8.8 or higher. Some older clients do not +automatically utilize the newer hashes. For example, PuTTY before +version 0.75 is affected. + +To resolve these problems, please upgrade your SSH client/server +whereever possible. If this is not feasible, support for the SHA-1 +hashes may be re-enabled using the following config options: + +HostkeyAlgorithms +ssh-rsa +PubkeyAcceptedAlgorithms +ssh-rsa -- 2.33.0
