Debian Long Term Support / LTS Security Information / 2019 / Security Information -- DLA-1991-1 libssh2

Debian Security Advisory

DLA-1991-1 libssh2 -- LTS security update

Date Reported:

13 Nov 2019

Affected Packages:

libssh2

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 943562.
In Mitre's CVE dictionary: CVE-2019-17498.

More information:

In libssh2, 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 8 Jessie, this problem has been fixed in version 1.4.3-4.1+deb8u6.

We recommend that you upgrade your libssh2 packages.

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