CVE-2020-15778
Publication date 24 July 2020
Last updated 24 July 2024
Ubuntu priority
** DISPUTED ** scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as demonstrated by backtick characters in the destination argument. NOTE: the vendor reportedly has stated that they intentionally omit validation of "anomalous argument transfers" because that could "stand a great chance of breaking existing workflows."
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| openssh | 20.04 LTS focal | Ignored |
| 18.04 LTS bionic | Ignored | |
| 16.04 LTS xenial | Ignored | |
| 14.04 LTS trusty | Ignored | |
| openssh-ssh1 | 20.04 LTS focal | Ignored |
| 18.04 LTS bionic | Ignored | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release |
Notes
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 upstream OpenSSH project will not be fixing this issue as it may result in breaking existing workflows. As such, we will not be fixing this issue in Ubuntu.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.8 · High
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |