mirror of
https://github.com/securego/gosec.git
synced 2024-11-05 19:45:51 +00:00
9c19cb6501
* Add check for usage of Rat.SetString in math/big with an overflow error Rat.SetString in math/big in Go before 1.16.14 and 1.17.x before 1.17.7 has an overflow that can lead to Uncontrolled Memory Consumption. It is the CVE-2022-23772. * Use ContainsPkgCallExpr instead of manual parsing
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package rules
|
|
|
|
import (
|
|
"go/ast"
|
|
|
|
"github.com/securego/gosec/v2"
|
|
)
|
|
|
|
type usingOldMathBig struct {
|
|
gosec.MetaData
|
|
calls gosec.CallList
|
|
}
|
|
|
|
func (r *usingOldMathBig) ID() string {
|
|
return r.MetaData.ID
|
|
}
|
|
|
|
func (r *usingOldMathBig) Match(node ast.Node, ctx *gosec.Context) (gi *gosec.Issue, err error) {
|
|
if callExpr := r.calls.ContainsPkgCallExpr(node, ctx, false); callExpr == nil {
|
|
return nil, nil
|
|
}
|
|
|
|
confidence := gosec.Low
|
|
major, minor, build := gosec.GoVersion()
|
|
if major == 1 && (minor == 16 && build < 14 || minor == 17 && build < 7) {
|
|
confidence = gosec.Medium
|
|
}
|
|
|
|
return gosec.NewIssue(ctx, node, r.ID(), r.What, r.Severity, confidence), nil
|
|
}
|
|
|
|
// NewUsingOldMathBig rule detects the use of Rat.SetString from math/big.
|
|
func NewUsingOldMathBig(id string, _ gosec.Config) (gosec.Rule, []ast.Node) {
|
|
calls := gosec.NewCallList()
|
|
calls.Add("math/big.Rat", "SetString")
|
|
return &usingOldMathBig{
|
|
calls: calls,
|
|
MetaData: gosec.MetaData{
|
|
ID: id,
|
|
What: "Potential uncontrolled memory consumption in Rat.SetString (CVE-2022-23772)",
|
|
Severity: gosec.High,
|
|
},
|
|
}, []ast.Node{(*ast.CallExpr)(nil)}
|
|
}
|