CVE-2017-15906
Published: 25 October 2017
The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.
Notes
| Author | Note |
|---|---|
| leosilva | file structure and patch mismatch, some ajustments required |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openssh Launchpad, Ubuntu, Debian |
artful |
Released
(1:7.5p1-10ubuntu0.1)
|
| bionic |
Released
(1:7.6p1-4)
|
|
| cosmic |
Released
(1:7.6p1-4)
|
|
| disco |
Released
(1:7.6p1-4)
|
|
| eoan |
Released
(1:7.6p1-4)
|
|
| focal |
Released
(1:7.6p1-4)
|
|
| groovy |
Released
(1:7.6p1-4)
|
|
| trusty |
Released
(1:6.6p1-2ubuntu2.10)
|
|
| upstream |
Released
(1:7.6p1-1)
|
|
| xenial |
Released
(1:7.2p2-4ubuntu2.4)
|
|
| zesty |
Ignored
(end of life)
|
|
| hirsute |
Released
(1:7.6p1-4)
|
|
|
Patches: upstream: https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |