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exif: blacklist invalid date (fix #539) 

Signed-off-by: Varun Patil <radialapps@gmail.com>
pull/602/head
Varun Patil 2023-04-19 17:37:35 -07:00
parent 105987e92d
commit 0e5f058af9
1 changed files with 11 additions and 1 deletions
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12
lib/Exif.php
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@ -159,11 +159,21 @@ class Exif
throw new \Exception("Invalid date: {$exifDate}");
}
// Epoch timestamp
$timestamp = $parsedDate->getTimestamp();
// Filter out dates before 1800 A.D.
if ($parsedDate->getTimestamp() < -5364662400) { // 1800 A.D.
if ($timestamp < -5364662400) { // 1800 A.D.
throw new \Exception("Date too old: {$exifDate}");
}
// Filter out January 1, 1904 12:00:00 AM UTC
// Exiftool returns this as the date when QuickTimeUTC is set and
// the date is set to 0000:00:00 00:00:00
if ($timestamp === -2082844800) {
throw new \Exception("Blacklisted date: {$exifDate}");
}
// Force the timezone to be the same as parseTz
if ($exifTz) {
$parsedDate->setTimezone($exifTz);