The OrderAndPaginate
function is used to order and paginate data. It is defined as follows:
func OrderAndPaginate(c *gin.Context) func(db *gorm.DB) *gorm.DB {
return func(db *gorm.DB) *gorm.DB {
sort := c.DefaultQuery("order", "desc")
order := fmt.Sprintf("`%s` %s", DefaultQuery(c, "sort_by", "id"), sort)
db = db.Order(order)
...
}
}
By using DefaultQuery
, the "desc"
and "id"
values are used as default values if the query parameters are not set. Thus, the order
and sort_by
query parameter are user-controlled and are being appended to the order
variable without any sanitization.
The same happens with SortOrder
, but it doesn’t seem to be used anywhere.
func SortOrder(c *gin.Context) func(db *gorm.DB) *gorm.DB {
return func(db *gorm.DB) *gorm.DB {
sort := c.DefaultQuery("order", "desc")
order := fmt.Sprintf("`%s` %s", DefaultQuery(c, "sort_by", "id"), sort)
return db.Order(order)
}
}
This issue was found using CodeQL for Go: Database query built from user-controlled sources.
> Based on this setup using uozi/nginx-ui:v2.0.0-beta.7
.
In order to exploit this issue, we need to find a place where the OrderAndPaginate
function is used. We can find it in the GET /api/dns_credentials
endpoint.
func GetDnsCredentialList(c *gin.Context) {
cosy.Core[model.DnsCredential](c).SetFussy("provider").PagingList()
}
The PagingList
function is defined as follows:
func (c *Ctx[T]) PagingList() {
data, ok := c.PagingListData()
if ok {
c.ctx.JSON(http.StatusOK, data)
}
}
And the PagingListData
function is defined as follows:
func (c *Ctx[T]) PagingListData() (*model.DataList, bool) {
result, ok := c.result()
if !ok {
return nil, false
}
result = result.Scopes(c.OrderAndPaginate())
...
}
Using the following request, an attacker can retrieve arbitrary values by checking the order used by the query. That is, the result of the comparison will make the response to be ordered in a specific way.
GET /api/dns_credentials?sort_by=(CASE+WHEN+(SELECT+1)=1+THEN+id+ELSE+updated_at+END)+ASC+--+ HTTP/1.1
Host: 127.0.0.1:8080
Authorization: <<JWT TOKEN>
You can notice the order change by changing =1
to =2
, and so the comparison will return false
and the order will be updated_at
instead of id
.
This issue may lead to Information Disclosure
CPE | Name | Operator | Version |
---|---|---|---|
github.com/0xjacky/nginx-ui | lt | 2.0.0.beta.9 |
github.com/0xjacky/nginx-ui/blob/04bf8ec487f06ab17a9fb7f34a28766e5f53885e/model/model.go#L278-L287
github.com/0xjacky/nginx-ui/blob/04bf8ec487f06ab17a9fb7f34a28766e5f53885e/model/model.go#L91
github.com/0xjacky/nginx-ui/blob/04bf8ec487f06ab17a9fb7f34a28766e5f53885e/model/model.go#L99C4
github.com/0xJacky/nginx-ui/commit/ec93ab05a3ecbb6bcf464d9dca48d74452df8a5b
github.com/0xJacky/nginx-ui/security/advisories/GHSA-h374-mm57-879c
github.com/advisories/GHSA-h374-mm57-879c
nvd.nist.gov/vuln/detail/CVE-2024-22196