CVE-2017-9224
Publication date 24 May 2017
Last updated 25 August 2025
Ubuntu priority
Description
An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds read occurs in match_at() during regular expression searching. A logical error involving order of validation and access in match_at() could result in an out-of-bounds read from a stack buffer.
From the Ubuntu Security Team
It was discovered that Oniguruma incorrectly handled certain regular expressions. An attacker could possibly use this issue to obtain sensitive information, cause a denial of service or execute arbitrary code.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libonig | 18.04 LTS bionic |
Fixed 6.3.0-1
|
| 16.04 LTS xenial |
Fixed 5.9.6-1ubuntu0.1
|
|
| 14.04 LTS trusty |
Fixed 5.9.1-1ubuntu1.1
|
|
| php5 | 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty |
Fixed 5.5.9+dfsg-1ubuntu4.22
|
|
| php7.0 | 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial |
Fixed 7.0.22-0ubuntu0.16.04.1
|
|
| 14.04 LTS trusty | Not in release | |
| php7.1 | 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release |
Patch details
| Package | Patch details |
|---|---|
| libonig |
|
| php5 |
|
| php7.0 |
|
| php7.1 |
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
9.8 · Critical
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-3382-1
- PHP vulnerabilities
- 10 August 2017
- USN-3382-2
- PHP vulnerabilities
- 18 December 2017