title: Heap over-read in PHP EXIF extension
description: 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.
problem types: CWE-126 Buffer Over-read
affected:
{
product: PHP
vendor: PHP Group
versions:
lessThan: 7.1.29, status: affected, version: 7.1.x, versionType: custom
lessThan: 7.2.18, status: affected, version: 7.2.x, versionType: custom
lessThan: 7.3.5, status: affected, version: 7.3.x, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 4.8
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
version: 3.0
]