CVE-2019-3856
Published: 25 March 2019
An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
From the Ubuntu security team
It was discovered that libssh2 incorrectly handled prompt requests. A remote attacker could possibly use this issue to execute arbitrary code.
Priority
Medium
CVSS 3 base score: 8.8
Status
| Package | Release | Status |
|---|---|---|
|
libssh2 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 21.10 (Impish Indri) |
Not vulnerable
(1.8.0-2.1)
|
|
| Ubuntu 21.04 (Hirsute Hippo) |
Not vulnerable
(1.8.0-2.1)
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Not vulnerable
(1.8.0-2.1)
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Needed
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Ignored
(end of standard support, was needed)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Needed
|