Products :
Avira requested the following products to be removed from the list, for the reason that they are license models and not products per se, it is arguable whether they should be listed or not, since the licenses (most likely) include the vulnerable products:
AVIRA WebGate Suite - Reason: is a License Model
AVIRA SmallBusiness Suite -> Reason: is a License Model
AVIRA Business Bundle -> Reason: is a License Model
AVIRA AntiVir NetWork Bundle -> Reason: is a License Model
AVIRA AntiVir NetGate Bundle -> Reason: is a License Model
AVIRA AntiVir GateWay Bundle -> Reason: is a License Model
AVIRA AntiVir Campus (for Education) -> Reason: is a License Model
Vendors and Products using the Avira Engine :
Important : The impact of this flaw on those devices has not been tested nor confirmed to exist, there is however reason to believe that the flaw existed in this products aswell.
http://www.avira.com/documents/utils/pdf/products/pi_system-integration_en.pdf
I. Background
Avira is a leading worldwide provider of self-developed protection solutions
for professional and private use. The company belongs to the pioneers in
this sector with over twenty years experience.
The protection experts have numerous company locations throughout Germany and cultivate partnerships in Europe, Asia and America. Avira has more than 180 employees at their main office in Tettnang near Lake Constance and is one of the largest employers in the region. There are around 250 people employed worldwide whose commitment is continually being confirmed by awards. A significant contribution to protection is the Avira AntiVir Personal which is being used by private users a million times over.
AV-Comparatives e.V. have chosen Avira AntiVir Premium as the best anti-virus solution of 2008
II. Description
By manipulating certain fields inside a RAR archive and attacker might trigger these exceptions. The attack vector should be rated as remote as an attachement to an e-mail is enough.
*Anybody else noticed that the amount of details in most advisories have become less than usefull ?*
III. Impact
In some cases the impact is a Denial of Service condition in others to an invalid read size of 4 bytes which again in some cases lead to an null pointer dereference.
The RAR parser inside the module leads to various errors whose exploitability index is rated "I don't have time for this now - so let's say 'maybe'" also sometimes known as "I lack the time and/or the skill to do so".
FAULTING_IP:
aepack!module_get_api+20ed9
0131cad9 8b10 mov edx,dword ptr [eax]
EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 0131cad9 (aepack!module_get_api+0x00020ed9)
ExceptionCode: c0000005 (Access violation)
ExceptionFlags: 00000000
NumberParameters: 2
Parameter[0]: 00000000
Parameter[1]: 00000268
Attempt to read from address 00000268
FAULTING_THREAD: 00000144
DEFAULT_BUCKET_ID: INVALID_POINTER_READ
PROCESS_NAME: avscan.exe
OVERLAPPED_MODULE: Address regions for 'AVREP' and 'rcimage.dll' overlap
READ_ADDRESS: 00000268
BUGCHECK_STR: APPLICATION_FAULT_INVALID_POINTER_READ_CORRUPT_MODULELIST_OVERLAPPED_MODULE
LAST_CONTROL_TRANSFER: from 0131cb8c to 0131cad9
STACK_TEXT:
WARNING: Stack unwind information not available. Following frames may be wrong.
0194f5fc 0131cb8c 0115bbfc 00000003 00000100 aepack!module_get_api+0x20ed9
0194f618 01319b96 0115bbfc 074cc4f4 00000002 aepack!module_get_api+0x20f8c
0194f654 0131a45a 00000010 01157160 00000001 aepack!module_get_api+0x1df96
0194f668 0131e7e0 000000d4 00f48ba8 011530d0 aepack!module_get_api+0x1e85a
0194f68c 01318c35 01157160 00000010 011530d0 aepack!module_get_api+0x22be0
00000000 00000000 00000000 00000000 00000000 aepack!module_get_api+0x1d035
FOLLOWUP_IP:
aepack!module_get_api+20ed9
0131cad9 8b10 mov edx,dword ptr [eax]
SYMBOL_NAME: aepack!module_get_api+20ed9
MODULE_NAME: aepack
IMAGE_NAME: aepack.dll
STACK_COMMAND: ~2s ; kb
FAILURE_BUCKET_ID: INVALID_POINTER_READ_c0000005_aepack.dll!module_get_api
BUCKET_ID: APPLICATION_FAULT_INVALID_POINTER_READ_CORRUPT_MODULELIST_OVERLAPPED_MODULE_aepack!module_get_api+20ed9
IV. Disclosure Timeline
My personal Vulnerability Reaction and Notification rating for AVIRA on
this issue (scale 1-10) : 9 (Very good)
The Vulnerability notification policy i adhere to:
http://blog.zoller.lu/search/label/Vulnerability%20disclosure%20Policy
"The crash occurs in a heavily corrupted, generated RAR archive while
extracting the contents of the 22nd file. We can't give any file names
as they are non-printable characters."
with AVPack 8.1.3.5 on the 09/01/2009
Management Center" and the "Internet Update Manager". "Das bedeutet im
Prinzip wirklich alle Produkte, ausser Produkte wie eben das Security
Management Center oder der Internet Update Manager"
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