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Perl Explicit Format Parameter Index Integer Overflow Vulnerability
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Secunia Advisory:
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SA17802
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Release Date:
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2005-12-01
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Last Update:
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2005-12-22
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Popularity:
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15,068 views
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Critical:
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Moderately critical
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Impact:
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DoS
System access
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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: | Perl 5.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Jack Louis has discovered a vulnerability in Perl, which can be exploited by malicious people to cause a Denial of Service and potentially to compromise a vulnerable Perl application.
The vulnerability is caused due to an integer overflow error in the "Perl_sv_vcatpvfn()" function of "sv.c" when handing a format string that contains an explicit format parameter index that exceeds INT_MAX. This can exploited to cause illegal memory access which causes an affected Perl application to crash.
Example:
perl -e 'printf("%2147483649\$n");'
The vulnerability has been confirmed in version 5.8.7 and also reported in versions 5.8.6 and 5.9.2. Other versions may also be affected.
Note: This vulnerability must be exploited in conjunction with a format string vulnerability in a Perl application. According to the vendor, exploitation of this vulnerability could lead to execution of arbitrary code.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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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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