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Clam AntiVirus pefromupx() Buffer Overflow Vulnerability
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Secunia Advisory:
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SA21374
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Release Date:
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2006-08-07
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Last Update:
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2006-08-08
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Popularity:
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11,565 views
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Critical:
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Highly critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Clam AntiVirus (clamav) 0.x
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Description:
Damian Put has discovered a vulnerability in Clam AntiVirus, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.
The vulnerability is caused due to an boundary error in the "pefromupx()" function in libclamav/upx.c when unpacking PE executable files compressed with UPX. This can be exploited to cause a heap-based buffer overflow via a specially crafted UPX compressed file.
Successful exploitation crashes the service and may allow execution of arbitrary code.
The vulnerability has been confirmed in versions 0.88.2 and 0.88.3. Other versions may also be affected.
Solution:
Update to version 0.88.4.
Provided and/or discovered by:
Damian Put
Changelog:
2006-08-08: Updated "Solution" section.
Original Advisory:
http://www.overflow.pl/adv/clamav_upx_heap.txt
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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