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Ghostscript Various Scripts Insecure Temporary File Creation
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Secunia Advisory:
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SA13933
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Release Date:
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2005-01-21
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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: | Ghostscript 8.x
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This advisory is currently marked as unpatched!
- Companies can be alerted when a patch is released! |
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Description:
Javier Fernández-Sanguino Peña has reported some vulnerabilities in Ghostscript, which potentially can be exploited by malicious, local users to conduct certain actions on a vulnerable system with escalated privileges.
The vulnerabilities are caused due to various scripts creating temporary files insecurely. This can be exploited via symlink attacks to create or overwrite arbitrary files on the system with the privileges of the user running a vulnerable script.
The following scripts are reportedly affected:
* lib/ps2epsi
* toolbin/3way.tcl
* toolbin/gsindent
* toolbin/gssubst
* toolbin/makeset.tcl
* toolbin/many2pdf.tcl
* toolbin/pre.tcl
The vulnerabilities have been reported in version 8.01 and also affect version 8.50. Other versions may also be vulnerable.
Solution:
Grant only trusted users access to affected systems.
Remove the affected scripts or edit the scripts to ensure that temporary files are created securely.
Provided and/or discovered by:
Javier Fernández-Sanguino Peña
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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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1 Related Secunia Security Advisories
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1. Ghostscript "zseticcspace()" Buffer Overflow Vulnerability
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