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Reject absurdly long duration strings (fix #4175)

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Matthew Holt 2022-09-15 14:25:29 -06:00
parent 49b7a25264
commit f1f7a22674
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1 changed files with 5 additions and 1 deletions
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caddy.go
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@ -763,8 +763,12 @@ func (d *Duration) UnmarshalJSON(b []byte) error {
// ParseDuration parses a duration string, adding
// support for the "d" unit meaning number of days,
// where a day is assumed to be 24h.
// where a day is assumed to be 24h. The maximum
// input string length is 1024.
func ParseDuration(s string) (time.Duration, error) {
if len(s) > 1024 {
return 0, fmt.Errorf("parsing duration: input string too long")
}
var inNumber bool
var numStart int
for i := 0; i < len(s); i++ {