CVE-2017-6181
Publication date 3 April 2017
Last updated 25 August 2025
Ubuntu priority
Description
The parse_char_class function in regparse.c in the Onigmo (aka Oniguruma-mod) regular expression library, as used in Ruby 2.4.0, allows remote attackers to cause a denial of service (deep recursion and application crash) via a crafted regular expression.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| ruby1.8 | ||
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| ruby2.0 | ||
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| ruby1.9.1 | ||
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| ruby2.3 | ||
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release | |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |