CVE-2017-9226

Publication date 24 May 2017

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

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 heap out-of-bounds write or read occurs in next_state_val() during regular expression compilation. Octal numbers larger than 0xff are not handled correctly in fetch_token() and fetch_token_in_cc(). A malformed regular expression containing an octal number in the form of '\700' would produce an invalid code point value larger than 0xff in next_state_val(), resulting in an out-of-bounds write memory corruption.

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
17.10 artful Ignored end of life
17.04 zesty Ignored end of life
16.10 yakkety Ignored end of life
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
17.10 artful Not in release
17.04 zesty 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
17.10 artful Not in release
17.04 zesty
Fixed 7.0.22-0ubuntu0.17.04.1
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
17.10 artful
Fixed 7.1.8-1ubuntu1
17.04 zesty Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

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)

Other references