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Advisory 2006-09-15.01

Norton Insufficient validation of 'SymEvent' driver input buffer

Basic information:

Release date: September 15, 2006

Last update: April 1, 2007

Severity:Medium

Character:System crash

Status:Unknown

Testing program: BTP00011P002NF.zip

Description:

Norton insufficiently protects its driver '\Device\SymEvent' against a manipulation by malicious applications and it fails to validate its input buffer. It is possible to open this driver and send arbitrary data to it, which are implicitly believed to be valid. It is possible to assemble the data in the input buffer such that the driver performs an invalid memory operation and crashes the whole operating system. Further impacts of this bug were not examined.

Vulnerable software:

Norton Personal Firewall 2006 version 9.1.1.7
Norton Personal Firewall 2006 version 9.1.0.33
probably all versions of Norton Personal Firewall 2006 and Norton Internet Security 2006
possibly older versions of Norton Personal Firewall and Norton Internet Security
The vendor's vulnerability description also mentions some versions of Norton AntiVirus, Norton SystemWorks, Symantec Client Security, Symantec AntiVirus Corporate Edition, Symantec pcAnywhere, Symantec Host IDS

Not vulnerable software:

Some updates of Norton Personal Firewall 2006 version 9.1.0.33
see the vendor's vulnerabilty description

Events:

2007-03-14: We have discovered that Norton Personal Firewall 2006 version 9.1.1.7 is vulnerable, the bug is unpatched again
2006-09-20: The product vendor released a new version, bug is fixed
2006-09-20: Vulnerability confirmed by the vendor
2006-09-19: Candidate for inclusion in the CVE list
2006-09-16: Vulnerability confirmed by popular information sources
2006-09-15: Advisory released
2006-09-15: Vendor notification

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