CVE-2019-13115: Integer Overflow
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.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2019-13115.
What is the severity of CVE-2019-13115?
The severity of CVE-2019-13115 is high with a CVSS score of 8.1.
How does CVE-2019-13115 affect Libssh2?
CVE-2019-13115 affects Libssh2 versions before 1.9.0 and could lead to an out-of-bounds read in the way packets are read from the server, potentially disclosing sensitive information.
Which software versions are affected by CVE-2019-13115?
CVE-2019-13115 affects Libssh2 versions before 1.9.0, Debian Linux versions 8.0 and 9.0, Fedora versions 29 and 30, Netapp Cloud Backup, NetApp E-Series SANtricity OS Controller versions between 11.0.0 and 11.70.1, and NetApp ONTAP Select Deploy administration utility.
How can I fix CVE-2019-13115?
To fix CVE-2019-13115, it is recommended to update to Libssh2 version 1.9.0 or later.