Enforce a password change limit policy to prevent abuse and unauthorized access
package main
import (
"github.com/gin-gonic/gin"
"net/http"
)
var passwordChangeCount = make(map[string]int)
func main() {
router := gin.Default()
router.POST("/change_password", func(c *gin.Context) {
username := c.PostForm("username")
newPassword := c.PostForm("new_password")
// Assume we have a function to change the password
changePassword(username, newPassword)
c.JSON(http.StatusOK, gin.H{"status": "Password changed successfully"})
})
router.Run(":8080")
}
func changePassword(username string, newPassword string) {
// Assume we have a function to change the password in the database
// db.ChangePassword(username, newPassword)
passwordChangeCount[username]++
}
In the above code, we have a simple API server running using the Gin framework. It exposes an endpoint
/change_password that accepts POST requests to change a user's password.
The
changePassword function is called whenever a POST request is made to the
/change_password endpoint. It changes the password for the given username and increments the
passwordChangeCount for the user. However, there is no limit on how many times a password can be changed in a day. This is a security vulnerability as it allows an attacker to brute force the password change functionality.
The
passwordChangeCount map stores the number of times a user has changed their password but it is never used to limit the number of password changes. This means that an attacker could potentially make unlimited password change requests, which is a serious security risk.
package main
import (
"github.com/gin-gonic/gin"
"net/http"
"time"
)
const passwordChangeLimit = 3
var passwordChangeCount = make(map[string]int)
var passwordChangeDate = make(map[string]time.Time)
func main() {
router := gin.Default()
router.POST("/change_password", func(c *gin.Context) {
username := c.PostForm("username")
newPassword := c.PostForm("new_password")
// Check if the user has exceeded the password change limit
if passwordChangeCount[username] >= passwordChangeLimit && passwordChangeDate[username].Day() == time.Now().Day() {
c.JSON(http.StatusForbidden, gin.H{"status": "Password change limit exceeded"})
return
}
// Assume we have a function to change the password
changePassword(username, newPassword)
c.JSON(http.StatusOK, gin.H{"status": "Password changed successfully"})
})
router.Run(":8080")
}
func changePassword(username string, newPassword string) {
// Assume we have a function to change the password in the database
// db.ChangePassword(username, newPassword)
passwordChangeCount[username]++
passwordChangeDate[username] = time.Now()
}
The updated code now includes a password change limit policy. This policy restricts the number of password change requests that can be made in a day by each user.
The
passwordChangeCount map tracks the number of password change requests made by each user. The
passwordChangeDate map stores the date of the last password change request made by each user.
Before allowing a password change request, the code checks if the user has exceeded the password change limit for the current day. This is done by comparing the value in
passwordChangeCount for the user with the
passwordChangeLimit constant and checking if the date in
passwordChangeDate for the user is the current day.
If the user has exceeded the limit, the password change request is rejected, and the user is notified with a "Password change limit exceeded" message.
The
changePassword function updates the
passwordChangeCount and
passwordChangeDate maps each time a password is successfully changed.
This approach ensures that the password change count for each user is stored in a secure and persistent manner. It also provides additional security measures to protect against password abuse.