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Ruby Multiple Vulnerabilities
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Secunia Advisory:
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SA31430
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Release Date:
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2008-08-11
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Last Update:
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2008-09-11
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Popularity:
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4,034 views
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Critical:
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Moderately critical
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Impact:
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Security Bypass
Spoofing
DoS
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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: | Ruby 1.8.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:
Some vulnerabilities have been reported in Ruby, which can be exploited by malicious people to bypass certain security restrictions, cause a DoS (Denial of Service), and conduct spoofing attacks.
1) Multiple errors in the implementation of safe level restrictions can be exploited to call "untrace_var()", perform syslog operations, and modify "$PROGRAM_NAME" at safe level 4, or call insecure methods at safe levels 1 through 3.
2) An error exists in the usage of regular expressions in "WEBrick::HTTPUtils.split_header_value()". This can be exploited to consume large amounts of CPU via a specially crafted HTTP request.
3) An error in "DL" can be exploited to bypass security restrictions and call potentially dangerous functions.
4) The vulnerability is caused due to resolv.rb not sufficiently randomising the DNS query port number, which can be exploited to poison the DNS cache.
The vulnerabilities are reported in the following versions:
* 1.8.5 and prior
* 1.8.6-p286 and prior
* 1.8.7-p71 and prior
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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