A vulnerability was discovered in libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds write in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
This update, to the latest current upstream release 1.9.0, addresses this security issue and also includes a number of other bug fixes and enhancements as described in the package changelog.
sudo dnf upgrade --advisory=FEDORA-2019-5885663621Please login to add feedback.
This update has been submitted for testing by pghmcfc.
This update test gating status has been changed to 'waiting'.
This update test gating status has been changed to 'ignored'.
This update has been pushed to testing.
This update can be pushed to stable now if the maintainer wishes
This update has been submitted for stable by pghmcfc.
This update has been pushed to stable.