CVE-2019-3860
Published: 25 March 2019
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SFTP packets with empty payloads are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
From the Ubuntu Security Team
It was discovered that libssh2 incorrectly handled SFTP packets with empty payloads. A remote attacker could possibly use this issue to cause a denial of service or obtain sensitive information.
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 |
Released
(1.8.0-2.1, 1.8.1)
|
|
| xenial |
Released
(1.5.0-2ubuntu0.1+esm1)
Available with Ubuntu Pro |
|
|
Patches: upstream: https://github.com/libssh2/libssh2/commit/f15b1e297f72882214988101ccdc5e6ad30d7e6e |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.1 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |