Bug 1466746 (CVE-2017-9229)

Summary: CVE-2017-9229 oniguruma: Invalid pointer dereference in left_adjust_char_head()
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bkearney, cbillett, ccoleman, cpelland, dajohnso, dedgar, dmcphers, fedora, gblomqui, gmccullo, gtanzill, hhorak, hhudgeon, jfrey, jgoulding, jhardy, jorton, jprause, ktdreyer, mtasaka, no1youknowz, obarenbo, psampaio, rbeyel, rcollet, roliveri, ruby-maint, simaishi, s, strzibny, tomckay, vanmeeuwen+fedora, vondruch, webstack-team, yozone
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: oniguruma 6.3.0, php 5.6.31, php 7.0.21, php 7.1.7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 03:15:56 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1466749, 1466750, 1466751, 1466752, 1466753, 1554537    
Bug Blocks: 1466748, 1491035    

Description Adam Mariš 2017-06-30 11:27:17 UTC 
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.
 
Upstream bug:

https://github.com/kkos/oniguruma/issues/59

Upstream patch:

https://github.com/kkos/oniguruma/commit/b690371bbf97794b4a1d3f295d4fb9a8b05d402d
Comment 1 Adam Mariš 2017-06-30 11:32:57 UTC 
Created oniguruma tracking bugs for this issue:

Affects: epel-7 [bug 1466750]
Affects: fedora-all [bug 1466752]


Created php tracking bugs for this issue:

Affects: fedora-all [bug 1466751]


Created ruby tracking bugs for this issue:

Affects: fedora-all [bug 1466749]


Created ruby193-ruby tracking bugs for this issue:

Affects: openshift-1 [bug 1466753]
Comment 3 Vít Ondruch 2017-09-06 13:47:21 UTC 
Ruby is not vulnerable according to upstream:

~~~
> CVE-2017-9229 https://github.com/kkos/oniguruma/issues/59

not affected.

% ruby <<'END'
str = [ 0xc7, 0xd6, 0xfe, 0xea, 0xe0, 0xe2, 0x00 ].pack('c*')
inp = "\x00\x7c\x2e\x7b\x39\x7d\x7b\x39\x30\x7d\x7b\x39\x7d\x7b\x2c\x39\x30\x30\x7d\x30"
re = Regexp.new(inp.force_encoding('EUC-JP'))
md = re.match str.force_encoding('EUC-JP')
p re, md
END
/\x00|.{9}{90}{9}{,900}0/
#<MatchData "\x00">
%
~~~
Comment 5 errata-xmlrpc 2018-05-03 05:07:18 UTC 
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS

Via RHSA-2018:1296 https://access.redhat.com/errata/RHSA-2018:1296