Stephan Wiesand wrote:
> On Fri, 2009-08-14 at 11:59 +0100, Dr Andrew C Aitchison wrote:
>> On Fri, 14 Aug 2009, Urs Beyerle wrote:
>>> I guess SL is affected like most other Linux distributions.
>>>
>>> I'm not 100% sure, but setting vm.mmap_min_addr to a value above 0
>>> should prevent an exploit.
>>>
>>> # sysctl vm.mmap_min_addr=4096
>> The default on my SL53 machines appears to be 65536
>> so there may be no need to do this.
>>
>> And Stephan Wiesand <[log in to unmask]> replied:
>>> I successfully rooted a 32bit SL5 system with SELinux enabled
>>> and vm.mmap_min_addr=64k with the public exploit :-(
>> Did this machine have kernel-2.6.18-128.4.1.el5 and hence the 
>> fix for CVE-2009-1895 which allows a user to bypass mmap_min_addr - see
> 
> Yes.
> 
>> https://rhn.redhat.com/errata/RHSA-2009-1193.html  ? 
>> Though I did see that there are other ways of bypassing
>> vm.mmap_min_addr :-(
> 
> Yes, and they work fine :-/
> 

Has anyone with a TAM with RedHat reported this to them yet?
I'm pretty sure someone has, I just want to verify and get a bug 
tracking number.

Troy
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Troy Dawson  [log in to unmask]  (630)840-6468
Fermilab  ComputingDivision/LCSI/CSI LMSS Group
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