oss-security - Re: CVE request - Linux kernel through 4.6.2 allows escalade privileges via IP6T_SO_SET

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Message-ID: <VI1PR06MB1087A485F2E0965FAFE79083A9CE0@VI1PR06MB1087.eurprd06.prod.outlook.com>
Date: Thu, 29 Sep 2016 13:54:53 +0000
From: Mario Pirker <mpirker@...ux.com>
To: "oss-security@...ts.openwall.com" <oss-security@...ts.openwall.com>
CC: "cve-assign@...re.org" <cve-assign@...re.org>
Subject: Re: CVE request - Linux kernel through 4.6.2 allows
 escalade privileges via IP6T_SO_SET_REPLACE compat setsockopt call

For completeness - here is a link to the advisory released by NCC Group:
https://github.com/nccgroup/TriforceLinuxSyscallFuzzer/tree/master/crash_reports/report_compatIpt

Thanks.
Mario

> Am 29.09.2016 um 15:45 schrieb Greg KH <greg@...ah.com>:
> 
> On Thu, Sep 29, 2016 at 07:43:35AM +0000, 张谦 wrote:
>> Hi there,
>> 
>> I found a memory corruption vulnerabiliry in Linux kernel through 4.6.2, and I
>> have a working exploit to escalade privileges which requires the ip6_tables
>> module to be loaded, that it is properly blocked on all up-to-date versions.
>> 
>> Due to the number of users running vulnerable code(not update to 4.7 or
>> higher), and that this exploit is only available to security researchers and
>> kernel packagers upon request but that I don't want it to spread.
>> 
>> 
>> 
>> I have reported this issue to Linux kernel official and they have already fixed
>> this.
> 
> Note, this was fixed many months ago, in May of 2016, and went into the
> stable kernel updates in June, 2016.  Any distro that updated to the
> stable kernel updates received this fix then.
> 
> Any distro that hasn't updated their kernel since then, well, you need
> to revaluate your trust of such a distro :)
> 
> thanks,
> 
> greg k-h



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