CVE-2017-18205
Publication date 27 February 2018
Last updated 24 July 2024
Ubuntu priority
In builtin.c in zsh before 5.4, when sh compatibility mode is used, there is a NULL pointer dereference during processing of the cd command with no argument if HOME is not set.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| zsh | ||
| 16.04 LTS xenial |
Fixed 5.1.1-1ubuntu2.1
|
|
| 14.04 LTS trusty |
Fixed 5.0.2-3ubuntu6.1
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
8.1 · High
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-3593-1
- Zsh vulnerabilities
- 8 March 2018