CVE-2019-6109
Published: 14 January 2019
An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.
Notes
| Author | Note |
|---|---|
| seth-arnold | openssh-ssh1 is provided for compatibility with old devices that cannot be upgraded to modern protocols. Thus we may not provide security support for this package if doing so would prevent access to equipment. |
| mdeslaur | The recommended workaround for this issue is to switch to using sftp instead of scp. The updates in USN-3885-1 inverted two CVE numbers by accident. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openssh-ssh1 Launchpad, Ubuntu, Debian |
groovy |
Ignored
(end of life)
|
| kinetic |
Ignored
(end of life, was needs-triage)
|
|
| bionic |
Needs triage
|
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Needs triage
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Needs triage
|
|
| lunar |
Needs triage
|
|
| trusty |
Does not exist
|
|
| upstream |
Ignored
(frozen on openssh 7.5p)
|
|
| xenial |
Does not exist
|
|
|
openssh Launchpad, Ubuntu, Debian |
impish |
Released
(1:7.9p1-6)
|
| groovy |
Released
(1:7.9p1-6)
|
|
| hirsute |
Released
(1:7.9p1-6)
|
|
| kinetic |
Released
(1:7.9p1-6)
|
|
| bionic |
Released
(1:7.6p1-4ubuntu0.2)
|
|
| cosmic |
Released
(1:7.7p1-4ubuntu0.2)
|
|
| disco |
Released
(1:7.9p1-6)
|
|
| eoan |
Released
(1:7.9p1-6)
|
|
| focal |
Released
(1:7.9p1-6)
|
|
| jammy |
Released
(1:7.9p1-6)
|
|
| lunar |
Released
(1:7.9p1-6)
|
|
| trusty |
Released
(1:6.6p1-2ubuntu2.12)
|
|
| upstream |
Released
(1:7.9p1-6, 1:6.7p1-5+deb8y8, 1:7.4p1-10+deb9u4)
|
|
| xenial |
Released
(1:7.2p2-4ubuntu2.7)
|
|
|
Patches: upstream: https://github.com/openssh/openssh-portable/commit/8976f1c4b2721c26e878151f52bdf346dfe2d54c upstream: https://github.com/openssh/openssh-portable/commit/bdc6c63c80b55bcbaa66b5fde31c1cb1d09a41eb |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.8 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |