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Date: Tue, 27 Nov 2012 18:16:51 -0500 (EST)
From: "Steven M. Christey" <coley@...-smtp.mitre.org>
To: oss-security@...ts.openwall.com
cc: Jan Lieskovsky <jlieskov@...hat.com>
Subject: Re: [oCERT-2012-001] multiple implementations
denial-of-service via MurmurHash algorithm collision
Fortunately, CVE-2011-5370 through CVE-2011-5373 don't even exist, so I
will REJECT these 2011 typos.
- Steve
On Tue, 27 Nov 2012, Andrea Barisani wrote:
> On Tue, Nov 27, 2012 at 10:00:55AM -0500, Jan Lieskovsky wrote:
>> Hello Andrea,
>>
>
> Hello,
>
>> thank you for the notification. Just quick check -
>> could you confirm the correct CVE id for JRuby Murmur flaw
>> should be CVE-2012-5370, and not CVE-2011-5370?
>>
>> Asking, because while oCERT-2012-001 page mentions CVE-2012-5370,
>> it actually links against:
>> http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-5370
>>
>> (so some of them is typo), and CVE-2011-5370 would also make
>> sense in the order for other Murmur hash algorithm implementations
>> for other languages.
>>
>
> You are quite correct, unfortunately there were typos in the other CVEs as
> well which slipped during the advisory review.
>
> I just corrected the advisory. The correct CVEs are the following:
> CVE-2012-5370 (JRuby), CVE-2012-5371 (Ruby), CVE-2012-5372 (Rubinius),
> CVE-2012-5373 (Oracle JDK, OpenJDK)
>
> I apologize for the error.
>
> Cheers
>
>> Thank you && Regards, Jan.
>> --
>> Jan iankko Lieskovsky / Red Hat Security Response Team
>>
>> ----- Original Message -----
>> #2012-001 multiple implementations denial-of-service via MurmurHash algorithm
>> collision
>>
>> Description:
>>
>> A variety of programming languages suffer from a denial-of-service (DoS)
>> condition against storage functions of key/value pairs in hash data
>> structures, the condition can be leveraged by exploiting predictable
>> collisions in the underlying hashing algorithms.
>>
>> The issue is similar to the one reported in oCERT-2011-003 and concerns the
>> MurmurHash algorithm family. The condition for predictable collisions in the
>> hashing functions has been reported for the following language
>> implementations: JRuby (MurmurHash2), Ruby (MurmurHash2), Rubinius
>> (MurmurHash3), Oracle JDK (MurmurHash), OpenJDK (MurmurHash). In the case of
>> Java OpenJDK the hash function affected by the reported issue is not enabled
>> by default, the default function is however reported vulnerable to
>> oCERT-2011-003.
>>
>> Affected version:
>> Ruby < 1.9.3-p327
>> JRuby all versions
>> Rubinius, all versions
>> Oracle JDK <= 7
>> OpenJDK <= 7
>>
>> Fixed version:
>> Ruby >= 1.9.3-p327
>> JRuby, N/A
>> Rubinius, N/A
>> Oracle JDK, N/A
>> OpenJDK, N/A
>>
>> Credit: vulnerability report received from Jean-Philippe Aumasson
>> <jeanphilippe.aumasson AT gmail.com>, PoC code and SipHash
>> implementation used to patch the issue developed by Martin Bosslet
>> <martin.bosslet AT gmail.com>.
>>
>> CVE: CVE-2012-5370 (JRuby), CVE-2011-5371 (Ruby), CVE-2011-5372 (Rubinius),
>> CVE-2011-5373 (Oracle JDK, OpenJDK)
>>
>> Timeline:
>> 2012-08-30: vulnerability report sent to Ruby, JRuby and Rubinius security contacts
>> 2012-09-03: vulnerability report forwarded to oCERT by Hiroshi Nakamura (Ruby security contact)
>> 2012-09-06: oCERT contacted reporters to investigate additional affected projects
>> 2012-09-06: reporters indicate OpenJDK as vulnerable and that Java security team has been contacted on 2012-07-31
>> 2012-09-10: oCERT requested CVE assignment for Ruby, JRuby and Rubinius
>> 2012-09-12: Oracle JDK and OpenJDK confirmed vulnerable by reporters
>> 2012-09-12: oCERT requested CVE assignment for Oracle JDK and OpenJDK
>> 2012-10-10: reporters indicate public PoC release on 2012-11-07 at ASFWS
>> 2012-11-08: assigned CVEs
>> 2012-11-09: Ruby 1.9.3-p327 released
>> 2012-11-23: advisory release
>>
>> References:
>> https://www.131002.net/siphash
>>
>> Permalink:
>> http://www.ocert.org/advisories/ocert-2012-001.html
>>
>> --
>> Andrea Barisani | Founder & Project Coordinator
>> oCERT | OSS Computer Security Incident Response Team
>>
>> <lcars@...rt.org> http://www.ocert.org
>> 0x864C9B9E 0A76 074A 02CD E989 CE7F AC3F DA47 578E 864C 9B9E
>> "Pluralitas non est ponenda sine necessitate"
>
> --
> Andrea Barisani | Founder & Project Coordinator
> oCERT | OSS Computer Security Incident Response Team
>
> <lcars@...rt.org> http://www.ocert.org
> 0x864C9B9E 0A76 074A 02CD E989 CE7F AC3F DA47 578E 864C 9B9E
> "Pluralitas non est ponenda sine necessitate"
>
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