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Linux Kernel 2.4 execve() Vulnerability
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Secunia Advisory:
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SA9154
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Release Date:
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2003-07-01
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Last Update:
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2003-07-16
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Popularity:
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11,105 views
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Critical:
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Not critical
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Impact:
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Exposure of sensitive information
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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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| OS: | Conectiva Linux 7.0
Conectiva Linux 8
Conectiva Linux 9
Linux Kernel 2.4.x
Mandrake Linux 8.x
Mandrake Linux 9.x
RedHat Linux 7.1
RedHat Linux 7.2
RedHat Linux 7.3
RedHat Linux 8.0
RedHat Linux 9
Slackware Linux 8.x
Slackware Linux 9.0
SuSE Linux 7.x
SuSE Linux 8.x
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| CVE reference: | CVE-2003-0462
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Description:
A vulnerability has been identified in the 2.4 version of the Linux kernel, which potentially can be exploited by malicious, local users to gain knowledge of sensitive information.
The vulnerability is caused due to an error in the "execve()" system call when handling the file descriptor for the target executable. This has successfully been exploited to read suid executables, where the user only had execute permissions.
Solution:
Don't expect that users aren't able to read files, on which they only have execute permissions. Therefore, sensitive content should not be placed within such files (eg. perl scripts and shell scripts).
Provided and/or discovered by:
Paul Starzetz
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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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