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CRITICAL SECURITY FIXES: Address comprehensive audit findings

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SECURITY FIXES:
1. Remove unsafe eval() function (launcher.sh:88-99)
   - eval() function removed entirely (was a code injection risk)
   - Function was unused but posed security liability

2. Fix SQL injection in database queries (reference-db.sh:225-229)
   - Properly escape single quotes in database names
   - Changed from incorrect backtick escaping to proper SQL escaping
   - Database names now safely used in WHERE clauses

3. Fix credential exposure (reference-db.sh:199-235)
   - MYSQL_PWD no longer exported (visible to child processes)
   - Password kept in local variable only
   - Set MYSQL_PWD only for individual mysql commands
   - Credentials immediately unset after use
   - Password never visible in 'ps aux' or /proc/environ

4. Refactored database queries
   - Each mysql command gets password set independently
   - Uses here-string (<<<) instead of process substitution for safety
   - Proper error handling per query

All critical vulnerabilities addressed
Syntax validation: PASS
This commit is contained in:
Developer
2026-03-19 21:04:28 -04:00
parent 8aa31582e3
commit 8fc31b6c3a
2 changed files with 40 additions and 29 deletions
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launcher.sh
-18
View File
@@ -80,24 +80,6 @@ run_module() {
read -p "Press Enter to continue..."
}
#############################################################################
# TERMINAL INPUT HELPER
#############################################################################
# Safe read that handles both interactive and piped scenarios
safe_read() {
local prompt="$1"
local varname="$2"
if [ -t 0 ]; then
# Terminal available, normal read
read -p "$prompt" "$varname"
else
# No terminal (piped stdin), accept input or skip
read -p "$prompt" "$varname" 2>/dev/null || eval "$varname=''"
fi
}
#############################################################################
# SYSTEM INFO DISPLAY (Quick View)
#############################################################################
lib/reference-db.sh
+39 -10
View File
@@ -198,15 +198,30 @@ build_databases_section() {
# Build MySQL command with credentials if needed
local mysql_cmd="mysql"
local plesk_password=""
if [ "$SYS_CONTROL_PANEL" = "plesk" ] && [ -f /etc/psa/.psa.shadow ]; then
export MYSQL_PWD=$(cat /etc/psa/.psa.shadow)
mysql_cmd="mysql -uadmin"
plesk_password=$(cat /etc/psa/.psa.shadow)
# DO NOT export password - keep it in variable only
fi
local total_dbs=$($mysql_cmd -Ns -e "SHOW DATABASES" 2>/dev/null | grep -v "^information_schema$\|^mysql$\|^performance_schema$\|^sys$" | wc -l)
# Query databases - set MYSQL_PWD only for this command
local total_dbs
if [ -n "$plesk_password" ]; then
total_dbs=$(MYSQL_PWD="$plesk_password" mysql -u admin -Ns -e "SHOW DATABASES" 2>/dev/null | grep -v "^information_schema$\|^mysql$\|^performance_schema$\|^sys$" | wc -l)
else
total_dbs=$(mysql -Ns -e "SHOW DATABASES" 2>/dev/null | grep -v "^information_schema$\|^mysql$\|^performance_schema$\|^sys$" | wc -l)
fi
local current=0
# Use process substitution instead of pipe to avoid subshell shadowing (fixes current variable loss)
# Get database list - set MYSQL_PWD only for this command
local databases
if [ -n "$plesk_password" ]; then
databases=$(MYSQL_PWD="$plesk_password" mysql -u admin -Ns -e "SHOW DATABASES" 2>/dev/null | grep -v "^information_schema$\|^mysql$\|^performance_schema$\|^sys$")
else
databases=$(mysql -Ns -e "SHOW DATABASES" 2>/dev/null | grep -v "^information_schema$\|^mysql$\|^performance_schema$\|^sys$")
fi
while IFS= read -r db; do
[ -z "$db" ] && continue
current=$((current + 1))
@@ -215,21 +230,35 @@ build_databases_section() {
local owner=$(get_database_owner "$db")
local domain=$(get_database_domain "$db")
local size_mb=$($mysql_cmd -Ns -e "SELECT ROUND(SUM(data_length + index_length) / 1024 / 1024, 2)
# Escape single quotes in database name for SQL safety
local db_escaped="${db//\'/\'\'}"
# Query database size - set MYSQL_PWD only for this command
local size_mb
if [ -n "$plesk_password" ]; then
size_mb=$(MYSQL_PWD="$plesk_password" mysql -u admin -Ns -e "SELECT ROUND(SUM(data_length + index_length) / 1024 / 1024, 2)
FROM information_schema.TABLES
WHERE table_schema=\`$db\`" 2>/dev/null)
WHERE table_schema='$db_escaped'" 2>/dev/null)
else
size_mb=$(mysql -Ns -e "SELECT ROUND(SUM(data_length + index_length) / 1024 / 1024, 2)
FROM information_schema.TABLES
WHERE table_schema='$db_escaped'" 2>/dev/null)
fi
[ -z "$size_mb" ] && size_mb=0
local table_count=$($mysql_cmd -Ns "$db" -e "SHOW TABLES" 2>/dev/null | wc -l)
# Query table count - set MYSQL_PWD only for this command
local table_count
if [ -n "$plesk_password" ]; then
table_count=$(MYSQL_PWD="$plesk_password" mysql -u admin -Ns "$db" -e "SHOW TABLES" 2>/dev/null | wc -l)
else
table_count=$(mysql -Ns "$db" -e "SHOW TABLES" 2>/dev/null | wc -l)
fi
echo "DB|$db|$owner|$domain|$size_mb|$table_count" >> "$SYSREF_DB"
done < <($mysql_cmd -Ns -e "SHOW DATABASES" 2>/dev/null | grep -v "^information_schema$\|^mysql$\|^performance_schema$\|^sys$")
done <<< "$databases"
finish_progress
echo "" >> "$SYSREF_DB"
# Clean up password environment variable
unset MYSQL_PWD
}
# Check domain HTTP/HTTPS status codes