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The Linux Orinoco driver, included in the kernel since 2.4.3 and in David Hinds' pcmcia-cs package since 3.1.30 supports a large number of wireless NICs based on the Lucent/Agere Hermes, Symbol Spectrum24 and Intersil/Conexant Prism 2/2.5/3 chipsets.
Vulnerability in Orinoco Drivers allows Information Leakage. |
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Credit:
The information has been provided by Meder Kydyraliev.
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Due to padding of Ethernet frames with uninitialized data, it is possible to remotely obtain parts of memory which may contain sensitive information.
Following sample dumps illustrate the problem:
13:21:58.901746 arp reply 192.168.0.179 is-at 00:09:5b:3e:ca:d4
0x0000: 0001 0800 0604 0002 0009 5b3e cad4 c0a8 ..........[>....
0x0010: 00b3 0012 f0bb 22ae c0a8 001f 6f73 743a ......".....ost:
0x0020: 7e20 2d20 5368 656c 6c20 4e6f 2e20 7353 ~.-.Shell.No..sS
0x0030: 8071 .q
13:21:17.811889 arp reply 192.168.0.179 is-at 00:09:5b:3e:ca:d4
0x0000: 0001 0800 0604 0002 0009 5b3e cad4 c0a8 ..........[>....
0x0010: 00b3 0012 f0bb 22ae c0a8 001f 2054 7261 ......"......Tra
0x0020: 636b 3035 2e6d 7033 2028 343a 3139 1b62 ck05.mp3.(4:19.b
0x0030: 6dd1 m.
Attacker can use arping(8) to send ARP requests to the target running vulnerable orinoco drivers and observe contents of uninitialized memory in the ARP replies.
Vendor status:
Developers of linux orinoco drivers where notified and the fix, which has been incorporated into 2.6.13.4 kernel, was issued.
Fix / Patch:
http://www.kernel.org/hg/linux-2.6/ .... /wireless/orinoco.c
Disclosure Timeline:
04.10.05 - Issue discovered. Vendor notified.
04.10.05 - Vendor response received along with the patch to remedy the problem.
10.10.05 - Confirmed that patch was incorporated into 2.6.13.4 kernel.
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