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CVE-2017-9224

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 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.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
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/690313a061f7a4fa614ec5cc8368b4f2284e059b



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/2693e52113ea0369144073e84d568931ffc173a7


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/60b1829e1cd18facc696264fd830c4bbd593cfa9

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

trusty Does not exist

upstream Needs triage

xenial Does not exist

zesty Does not exist

Patches:



upstream: https://github.com/php/php-src/commit/60b1829e1cd18facc696264fd830c4bbd593cfa9

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