Debian 10026 Published by

A libssh security update has been released for Debian GNU/Linux 8 and 9 Extended LTS to address two security issues.



ELA-923-1 libssh security update

Package : libssh
Version : 0.6.3-4+deb8u6 (jessie), 0.7.3-2+deb9u4 (stretch)

Related CVEs :
CVE-2019-14889
CVE-2023-1667

Two security issues have been discovered in libssh, a tiny C SSH
library, which may allow a remote authenticated user to cause a denial
of service or inject arbitrary commands.

CVE-2019-14889
A flaw was found with the libssh API function ssh_scp_new() in
versions before 0.9.3 and before 0.8.8. When the libssh SCP client
connects to a server, the scp command, which includes a
user-provided path, is executed on the server-side. In case the
library is used in a way where users can influence the third
parameter of the function, it would become possible for an attacker
to inject arbitrary commands, leading to a compromise of the remote
target.

Note that this CVE was previously fixed in jessie and that it has
now been fixed in stretch.

CVE-2023-1667
A NULL pointer dereference was found In libssh during re-keying with
algorithm guessing. This issue may allow an authenticated client to
cause a denial of service.

ELA-923-1 libssh security update