DLA-3437-1

Source

https://storage.googleapis.com/debian-osv/dla-osv/DLA-3437-1.json

Published

2023-05-29T00:00:00Z

Modified

2023-06-28T06:26:57.868886Z

Details

Two security issues have been discovered in libssh, a tiny C SSH library, which may allows an 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.
• 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.

For Debian 10 buster, these problems have been fixed in version 0.8.7-1+deb10u2.

We recommend that you upgrade your libssh packages.

For the detailed security status of libssh please refer to its security tracker page at: https://security-tracker.debian.org/tracker/libssh

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

References

• https://www.debian.org/lts/security/2023/dla-3437