Out-of-bounds Read in Php

CVE-2020-7064

In PHP versions 7.2.x below 7.2.9, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while parsing EXIF data with exif_read_data() function, it is possible for malicious data to cause PHP to read one byte of uninitialized memory. This could potentially lead to information disclosure or crash.

Vulnerability class: Buffer Overflow

EPSS: 0.043 (90.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-7064?
CVE-2020-7064 is a medium-severity vulnerability in Php, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2020-04-01.
How severe is CVE-2020-7064?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2020-7064 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.