CVE-2019-13115 Integer overflow in n/a
A remote attacker controlling an SSH server can trigger an integer overflow in libssh2 clients, leading to information disclosure or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-13115?
CVE-2019-13115 is a high-severity vulnerability in Debian Debian Linux, published on 16 Jul 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Which versions are affected by CVE-2019-13115?
It affects 7 products.
Products include Debian Debian Linux, F5 Traffix Systems Signaling Delivery Controller, Fedoraproject Fedora, Libssh2 Libssh2, Netapp Cloud Backup, Netapp E-Series Santricity Os Controller and 1 more.
How do I fix CVE-2019-13115?
Upgrade to a fixed version.
Is CVE-2019-13115 being exploited?
There is no known exploitation of CVE-2019-13115 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2019-13115, DEBIAN-CVE-2019-13115, GHSA-98vm-qgxx-5rjm, UBUNTU-CVE-2019-13115.