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avast! Insecure Temporary File Creation
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Secunia Advisory:
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SA19683
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Release Date:
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2006-04-18
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Last Update:
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2006-04-26
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Popularity:
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6,036 views
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Critical:
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Less critical
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Impact:
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Privilege escalation
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Where:
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Local system
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Solution Status:
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Unpatched
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| Software: | avast! Linux Home Edition 1.x
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| CVE reference: | CVE-2006-1892
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Description:
Julian L. has reported a vulnerability in avast! Linux Home Edition, which can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.
When performing a virus scanning, the program checks for the presence of a specific folder in the "/tmp" directory. If this folder is not present, it is created with insecure permissions, which can be exploited via symlink attacks to create, overwrite, or manipulate the permissions of arbitrary files on the system with the privileges of the user running the program.
The vulnerability has been reported in version 1.0.5. Other versions may also be affected.
Solution:
Grant only trusted users access to affected systems.
Provided and/or discovered by:
Julian L.
Changelog:
2006-04-26: Added CVE reference.
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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.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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