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ClamAV Multiple Vulnerabilities
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Secunia Advisory:
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SA25244
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Release Date:
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2007-05-11
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Last Update:
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2007-06-12
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Popularity:
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10,183 views
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Critical:
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Moderately critical
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Impact:
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DoS
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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
ClamWin Free Antivirus 0.x
ClamXav 1.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2007-2650
CVE-2007-3023
CVE-2007-3024
CVE-2007-3025
CVE-2007-3122
CVE-2007-3123
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Description:
Some vulnerabilities have been reported in ClamAV, which can be exploited by malicious people to cause a DoS (Denial of Service).
1) An error exists within the OLE2 parser when handling objects with malformed FAT partitions and large property sizes. This can be exploited to cause a DoS due to storage and CPU resource consumption by scanning a specially crafted OLE2 file.
2) An error in the processing of RAR files can be exploited to crash the process via a specially crafted RAR file.
3) A boundary error exists within the file /libclamav/unsp.c, which can be exploited to crash the process via a specially crafted NsPacked file.
4) An incorrect regular expression in libclamav/phishcheck.c can be exploited to cause a DoS by consuming all available CPU resources via a specially crafted file.
Successful exploitation may depend upon the regular expression implementation used.
Solution:
Update to ClamAV version 0.90.3.
http://www.clamav.net/download/sources
Provided and/or discovered by:
1) Victor Stinner, INL.
2) Elliot
3) & 4) Edwin Török
Changelog:
2007-05-18: Added CVE reference.
2007-06-04: Added vulnerability #2. Updated "Criticality". Updated "Solution" section.
2007-06-06: Added vulnerability #3.
2007-06-11: Added CVE reference.
2007-06-12: Added CVE reference and vulnerability #4.
Original Advisory:
1) http://news.gmane.org/gmane.comp.security.virus.clamav.devel/cutoff=2853
2) https://wwws.clamav.net/bugzilla/show_bug.cgi?id=521
3) https://wwws.clamav.net/bugzilla/show_bug.cgi?id=464
4) https://wwws.clamav.net/bugzilla/show_bug.cgi?id=497
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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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