Bug 1473720 - (CVE-2017-11465) CVE-2017-11465 ruby: Invalid read/write in parser_yyerror function in UTF-8 parser
CVE-2017-11465 ruby: Invalid read/write in parser_yyerror function in UTF-8 p...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
: ---
: ---
Assigned To: Red Hat Product Security
impact=low,public=20170713,reported=2...
: Security
Depends On: 1473721
Blocks: 1473724
  Show dependency treegraph
 
Reported: 2017-07-21 09:46 EDT by Adam Mariš
Modified: 2017-07-31 18:37 EDT (History)
30 users (show)

See Also:
Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed:
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)

  None (edit)
Description Adam Mariš 2017-07-21 09:46:58 EDT
The parser_yyerror function in the UTF-8 parser in Ruby 2.4.1 allows attackers to cause a denial of service (invalid write or read) or possibly have unspecified other impact via a crafted Ruby script, related to the parser_tokadd_utf8 function in parse.y. NOTE: this might have security relevance as a bypass of a $SAFE protection mechanism.

Upstream bug:

https://bugs.ruby-lang.org/issues/13742
Comment 1 Adam Mariš 2017-07-21 09:47:34 EDT
Created ruby tracking bugs for this issue:

Affects: fedora-all [bug 1473721]
Comment 2 Vít Ondruch 2017-07-24 05:07:17 EDT
This is not vulnerability according to upstream [1]:

~~~
Note that this is not a vulnerability.
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11465 is invalid.
~~~

[1] https://bugs.ruby-lang.org/issues/13742#note-3
Comment 4 Stefan Cornelius 2017-07-25 06:01:09 EDT
Lowering impact because this is disputed upstream. Unfortunately, I've not been able to reproduce this issue myself yet, so I can't say if the dispute is correct.

Note You need to log in before you can comment on or make changes to this bug.