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CVE-2017-9228

Published: 24 May 2017

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 occurs in bitset_set_range() during regular expression compilation due to an uninitialized variable from an incorrect state transition. An incorrect state transition in parse_char_class() could create an execution path that leaves a critical local variable uninitialized until it's used as an index, 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.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
php7.1
Launchpad, Ubuntu, Debian
artful
Released (7.1.8-1ubuntu1)
bionic Does not exist

xenial Does not exist

zesty Does not exist

trusty Does not exist

upstream Needs triage

Patches:



upstream: https://github.com/php/php-src/commit/1c845d295037702d63097e2216b3c5db53f79273
libonig
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic
Released (6.3.0-1)
trusty
Released (5.9.1-1ubuntu1.1)
upstream Needs triage

xenial
Released (5.9.6-1ubuntu0.1)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
Patches:
upstream: https://github.com/kkos/oniguruma/commit/3b63d12038c8d8fc278e81c942fa9bec7c704c8b



php5
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty
Released (5.5.9+dfsg-1ubuntu4.22)
upstream Needs triage

xenial Does not exist

zesty Does not exist

Patches:

upstream: https://github.com/php/php-src/commit/703be4f77e662837b64499b0d046a5c8d06a98b9


php7.0
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (7.0.22-0ubuntu0.16.04.1)
zesty
Released (7.0.22-0ubuntu0.17.04.1)
Patches:


upstream: https://github.com/php/php-src/commit/1c845d295037702d63097e2216b3c5db53f79273

Severity score breakdown

Parameter Value
Base score 9.8
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