-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian LTS Advisory DLA-2848-1 debian-...@lists.debian.org https://www.debian.org/lts/security/ Anton Gladky December 17, 2021 https://wiki.debian.org/LTS - -------------------------------------------------------------------------
Package : libssh2 Version : 1.7.0-1+deb9u2 CVE ID : CVE-2019-13115 CVE-2019-17498 Two issues have been discovered in libssh2, a client-side C library implementing the SSH2 protocol: CVE-2019-13115: kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. CVE-2019-17498: SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. For Debian 9 stretch, these problems have been fixed in version 1.7.0-1+deb9u2. We recommend that you upgrade your libssh2 packages. For the detailed security status of libssh2 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/libssh2 Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEu71F6oGKuG/2fnKF0+Fzg8+n/wYFAmG9FZcACgkQ0+Fzg8+n /wYcjA/8DbDlW35YAdfZnkIdylAZDlC0v/Ij5NaLcpJYUrL7OjFvPGJvh3koZz1f y2HM/U2VEGYoMLHKxDItEpSw9FkkS6NB2HoA8CM2+PAkzn6GAVlJ26Kh0SkrHZi1 djFlyC/FQDm07m7jTy9ntG7kioisjClGMrDQj+Zkb00TczKk4+q6uB92HpDj0/sG M25HwhVmUuFYnR6tS5gSeil/pcjmFD6486BHu+uAfqIQwMsyofWGTcT7iSTtIaLE 2LHWLy4AOZVsdbhEdcARv3TQccHkzR1yWkQ9aGIVNuxXu5jWCfnyEmxJjePyGe4q EDdrA1ml1nDfhzxbQevbGWsDUXPuYEYP0lMqu0QM/Z7D8lR0EoOheoS9zKkn+M5g BDAuRSrE1yB+1Cha5EoXtEeJ9abbW9E6UqqeMWLRkAjlGfsvQnOU5JlpZauPkjaW taz3gQ7ByrVPv9Z0kdp0KiwgaTiBErbaqxKB35/XILDAvu7H/tdOV5vx900uvUah 0XWU0Oyp7wRNU0cPzf0hYoqi5rwoB+zFSFj5VtGU8aRpEkmxpVVbUCPcqOnYE0Bg RaDS3euw1zvzzNp6TINZg2SrF4rF/KFbA5UpLiRq7D0W5jSgNVcnfTTCOtdWscrt 8kZB5JNyePyyRGNsq8A28mgcV+pFmfg1NDMmtAC7sy8rPvQTyww= =e/qE -----END PGP SIGNATURE-----