CVE-2019-3863
Published: 25 March 2019
A flaw was found in libssh2 before 1.8.1. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used as an index to copy memory causing in an out of bounds memory write error.
From the Ubuntu Security Team
It was discovered that libssh2 incorrectly handled interactive response messages length. A remote attacker could possibly use this issue to execute arbitrary code.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
libssh2 Launchpad, Ubuntu, Debian |
bionic |
Needed
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Not vulnerable
(1.8.0-2.1)
|
|
| eoan |
Not vulnerable
(1.8.0-2.1)
|
|
| focal |
Not vulnerable
(1.8.0-2.1)
|
|
| groovy |
Not vulnerable
(1.8.0-2.1)
|
|
| hirsute |
Not vulnerable
(1.8.0-2.1)
|
|
| impish |
Not vulnerable
(1.8.0-2.1)
|
|
| jammy |
Not vulnerable
(1.8.0-2.1)
|
|
| kinetic |
Not vulnerable
(1.8.0-2.1)
|
|
| lunar |
Not vulnerable
(1.8.0-2.1)
|
|
| mantic |
Not vulnerable
(1.8.0-2.1)
|
|
| trusty |
Released
(1.4.3-2ubuntu0.2+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Needs triage
|
|
| xenial |
Released
(1.5.0-2ubuntu0.1+esm1)
Available with Ubuntu Pro |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |