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CVE-2017-9229

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 SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition.

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

7.5

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/b690371bbf97794b4a1d3f295d4fb9a8b05d402d



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/27a743b82b0b8d7e8e8154f3cc402204fea0ebd3


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/5416deec665db293ae25548828791453d776a6bf

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/5416deec665db293ae25548828791453d776a6bf

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H