CVE-2019-13115
Fixed in a distro release EPSS 12%
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 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. 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.
Products: libssh2, debian_linux, fedoraproject fedora, netapp cloud_backup, netapp e-series_santricity_os_controller, netapp ontap_select_deploy_administration_utility, f5 traffix_systems_signaling_delivery_controller
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.10 | libssh2 | 1.9.0-r0 |
| Alpine 3.11 | libssh2 | 1.9.0-r0 |
| Alpine 3.12 | libssh2 | 1.9.0-r0 |
| Alpine 3.13 | libssh2 | 1.9.0-r0 |
| Alpine 3.14 | libssh2 | 1.9.0-r0 |
| Alpine 3.15 | libssh2 | 1.9.0-r0 |
| Alpine 3.16 | libssh2 | 1.9.0-r0 |
| Alpine 3.17 | libssh2 | 1.9.0-r0 |
| Alpine 3.18 | libssh2 | 1.9.0-r0 |
| Alpine 3.19 | libssh2 | 1.9.0-r0 |
| Alpine 3.20 | libssh2 | 1.9.0-r0 |
| Alpine 3.21 | libssh2 | 1.9.0-r0 |
| Alpine 3.22 | libssh2 | 1.9.0-r0 |
| Alpine 3.23 | libssh2 | 1.9.0-r0 |
| Alpine 3.24 | libssh2 | 1.9.0-r0 |
| Alpine 3.9 | libssh2 | 1.9.0-r0 |
| Debian 10 | libssh2 | 1.8.0-2.1+deb10u1 |
| Debian 12 | libssh2 | 1.9.0-1 |
| Debian 13 | libssh2 | 1.9.0-1 |
| Debian 14 | libssh2 | 1.9.0-1 |
| Debian 8 | libssh2 | 1.4.3-4.1+deb8u4 |
| Debian 9 | libssh2 | 1.7.0-1+deb9u2 |
| Ubuntu Pro 14.04 LTS | libssh2 | 1.4.3-2ubuntu0.2+esm2 |
| Ubuntu Pro 16.04 LTS | libssh2 | 1.5.0-2ubuntu0.1+esm1 |
| Ubuntu Pro 18.04 LTS | libssh2 | no fix |
| Ubuntu Pro 20.04 LTS | libssh2 | no fix |