Avoid SetString() from big.Rat
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ID: go-security/avoid-rat-setstring
Language: Go
Severity: Warning
Category: Security
CWE: 109
Description
Do not use the function SetString from big.Rat as it as a potential overflow in some Go versions. Even if your current Go runtime is not vulnerable to this issue, your code may be used by runtime that are. We recommend avoiding the function SetString from the math/big package for this reason.
Learn More
Non-Compliant Code Examples
package main
import (
"math/big"
"fmt"
)
func main() {
var r = big.Rat{}
r.SetString("13e-9223372036854775808")
fmt.Println(r)
}
package main
import (
"math/big"
"fmt"
)
func anotherFunction() {
r = big.Rat{}
fmt.Println(r)
r.SetString("13e-9223372036854775808")
fmt.Println(r)
}
func anotherFunction2() {
var r big.Rat
fmt.Println(r)
r.SetString("13e-9223372036854775808")
fmt.Println(r)
}
func main() {
var r = big.Rat{}
r.SetString("13e-9223372036854775808")
fmt.Println(r)
}
package main
import (
"math/big"
"fmt"
)
func main() {
r := big.Rat{}
r.SetString("13e-9223372036854775808")
fmt.Println(r)
}
Compliant Code Examples
package main
import (
"math/big"
"fmt"
)
func main() {
r := big.NewRat(10, 3)
fmt.Println(r)
}
