Security bug in udhcp applet

Krishna Ram Prakash R krp at gtux.in
Thu Dec 20 12:23:30 UTC 2018


Hi Denys,

Thanks for the fix!

Wouldn't the option parsing loop in fill_envp() in dhcpc.c parse and
load options without checking for the expected length and still result
in out-of-bounds read? Any thoughts on that?

Thanks,
KRP

On 12/18/18 12:17 AM, Denys Vlasenko wrote:
> I committed a fix, see bz
> On Mon, Dec 17, 2018 at 6:52 AM Krishna Ram Prakash R <krp at gtux.in> wrote:
>>
>>
>> Hi all,
>>
>> I reported a security bug in udhcp applet, a few days back in busybox
>> Bugzilla[1] as I could not find any private disclosure mailing lists.
>> But, it is not yet assigned and there are no activities in the bug report.
>>
>> Just a gentle reminder to the maintainers in case it has been missed.
>>
>> Thanks,
>> KRP
>>
>> [1] https://bugs.busybox.net/show_bug.cgi?id=11506
>>
>>
>>
>> _______________________________________________
>> busybox mailing list
>> busybox at busybox.net
>> http://lists.busybox.net/mailman/listinfo/busybox

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