CVE-2019-11036: php: Buffer over-read in exif_process_IFD_TAG() leading to information disclosure

Severity: Critical

CVSS Score: 9.1

When processing certain files, PHP EXIF extension in versions 7.1.x below 7.1.29, 7.2.x below 7.2.18 and 7.3.x below 7.3.5 can be caused to read past allocated buffer in exif_process_IFD_TAG function. This may lead to information disclosure or crash.